METHOD FOR DETERMINING A DISTANCE BY MEANS OF AN OPTOELECTRONIC IMAGE SENSOR

摘要

The invention relates to a device and a method for determining a distance (d) to an object (O) by means of an optoelectronic image sensor (5) having at least one image point (6) and an adjustable integrator (8) associated therewith. The object is illuminated by transmitting at least one light impulse (1) having a predetermined illumination duration (Tp). Any light impulses (2) reflected back from the object (O) are detected within a predetermined integration time (T1, T2) that is less than or equal to the illumination duration (Tp), wherein a time point for the beginning of the integration (T1) takes place before the impact of the reflected light impulse (2), which has been reflected by the object (O). The distance (d) is determined from the different intensities (II, 12) of the light impulses (2) that are reflected back. The time point (T1s, T2s) of the beginning of the integration time (T1, T2) is set to a time-delayed time point (Td) after the transmission of such a light impulse (1) has been initiated. The knowledge of fading out a first chronological section of received data in order to avoid the influence of precipitation is used according to a second embodiment for determining precipitation.