Abstract: A method of operating a monitoring sensor comprising a light transmitter; a light receiver; and a deflection unit is described, with the method comprising the steps: a) detecting a respective detected signal that comprises a time curve of a reception signal received for an angle of rotation; b) determining the number of reception light pulses in the detected signal; c) generating a detection signal that comprises information on the determined position of an object, wherein checks are made in accordance with first, second and third test conditions, and with the first test condition being checked in a first test step, and one of the second and third test conditions being checked in possibly performed second and/or third test steps respectively.

Abstract: An optoelectronic sensor (10) for distance determination comprises a transmitter (12) for transmitting a light beam (14) having a plurality of consecutive individual light pulses, a rotatable deflection unit (16) for deflecting the light beam (14), an angle measuring unit (28) for determining an angular position of the deflection unit (16), a light receiver (24) for generating reception pulses from remitted transmission light, a plurality of histogram memories (34) each associated with an angular position, and an evaluation unit (30) which is configured to accumulate time histograms in the histogram memories (34) across several periods of the rotational movement of the deflection unit (16) from reception pulses which are each detected at the angular position associated with the respective histogram memory (34), and to determine, from the histograms of the associated histogram memory (34), an object distance for an angular position.

Abstract: An optoelectronic sensor (10) for distance determination comprises a transmitter (12) for transmitting a light beam (14) having a plurality of consecutive individual light pulses, a rotatable deflection unit (16) for deflecting the light beam (14), an angle measuring unit (28) for determining an angular position of the deflection unit (16), a light receiver (24) for generating reception pulses from remitted transmission light, a plurality of histogram memories (34) each associated with an angular position, and an evaluation unit (30) which is configured to accumulate time histograms in the histogram memodes (34) across several periods of the rotational movement of the deflection unit (16) from reception pulses which are each detected at the angular position associated with the respective histogram memory (34), and to determine, from the histograms of the associated histogram memory (34), an object distance for an angular position.