Method for the signal evaluation of signals of a rangefinder

• Main Authors: Middelberg, René, Spiekermann, Sebastian, Belau, Sven Carsten, Irmer, Daniel
• Format: Patent
• Language: English
• Published: 11.05.2021
• Subjects: AGRICULTURE; ALARM SYSTEMS; ANALOGOUS ARRANGEMENTS USING OTHER WAVES; ANIMAL HUSBANDRY; ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; FISHING; FORESTRY; HARVESTING; HUMAN NECESSITIES; HUNTING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MOWING; ORDER TELEGRAPHS; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL; PERFORMING OPERATIONS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SIGNALLING; SIGNALLING OR CALLING SYSTEMS; SOIL WORKING IN AGRICULTURE OR FORESTRY; TESTING; TRANSPORTING; TRAPPING; VEHICLES IN GENERAL

A method for the evaluation of signals of a rangefinder having at least one sensor point involves carrying out measurements cyclically, wherein the rangefinder emits a plurality of measurement points that indicate a distance from the sensor point. The rangefinder measures distances in a plurality of directions, and a horizontal angle is associated with each measurement point. The measurement points are differentiated into useful signals and interfering signals based on the distance. Measurement points with a distance below a first limiting value are identified as interfering signals, and measurement points above the first limiting value are identified as useful signals. Useful signals are associated with a first measurement area when they satisfy a predetermined condition for distance and horizontal angle. The quantity of useful signals in the first measurement area is determined, and a warning signal is emitted when the quantity of useful signals lies below a first threshold value.