Abstract: A sensor arrangement for detecting features of particles includes an emitter for emitting electromagnetic radiation, a detector for receiving the electromagnetic radiation emitted from the emitter and for providing detector signals based on the received electromagnetic radiation, and a measurement volume irradiable by the electromagnetic radiation emitted by the emitter. The measurement volume is configured for receiving particles flowing therethrough. The sensor arrangement further includes a digitizing unit for digitizing the detector signals, and an evaluation unit for evaluating the detector signals. The evaluation unit stores a trained algorithm for machine learning. The algorithm is configured for determining at least one feature of the particles based on the detector signals.

Abstract: A sensor arrangement for detecting features of particles includes an emitter for emitting electromagnetic radiation, a detector for receiving the radiation emitted from the emitter and for providing detector signals as a function of the received radiation, a measurement chamber configured to be irradiated by the radiation emitted by the emitter and to receive particles flowing therethrough, an evaluation unit for evaluating the detector signals, and a locating unit for locating the measurement chamber with respect to a reference point of a coordinate system, so that a respective position of a respective particle within the radiation is determinable.

Abstract: A method for calibrating a particle sensor includes focusing a laser beam on a calibration plane for generating a calibration intensity distribution in the calibration plane. A calibration plate is arranged in the calibration plane. Contrast regions for modulating an intensity of the laser beam are formed on the calibration plate. The method further includes moving the calibration plate and/or the calibration intensity distribution in the calibration plane, recording at least one intensity signal of the laser beam, following passage through the calibration plane, and calibrating the particle sensor by evaluating the at least one intensity signal.