Verfahren zur Erkennung einer Sichtbehinderung, insbesondere eines Abstandssensors einer adaptiven Geschwindigkeitsregelvorrichtung

• Main Authors: LEHRE, KLAUS, HELLMANN, MANFRED, URBAN, WERNER
• Format: Patent
• Language: German
• Published: 03.09.2009
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PERFORMING OPERATIONS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TESTING; TRANSPORTING; VEHICLES IN GENERAL

Die Erfindung betrifft ein Verfahren zur Erkennung einer Sichtbehinderung, insbesondere eines Abstandssensors (12) einer adaptiven Geschwindigkeitsregelvorrichtung (11) für ein Kraftfahrzeug (10), wobei eine Sichtbehinderung erkannt wird, wenn eine von dem Abstandssensor (12) detektierte rückgestreute Strahlungsleistung einen vorgegebenen Schwellwert unterschreitet. Der Schwellwert wird während des Betriebs des Kraftfahrzeugs (10) in Abhängigkeit von einer die aktuelle Fahrbahnsteigung in Fahrtrichtung des Kraftfahrzeugs (10) charakterisierenden Größe laufend angepasst. The method involves identifying a visibility obstacle if a value of radiated power that is refracted towards the rear and detected by a distance sensor (12) of an adaptive cruising speed control system or an adaptive speed regulating device (11), drops below a predetermined threshold value. The threshold value is continuously adjusted during operation of a motor vehicle (10) i.e. car, based on a quantity characterizing an actual slope of a roadway, in a displacement direction of the motor vehicle, where the quantity is an actual slope variation coefficient. Independent claims are also included for the following: (1) a computer program comprising instructions to perform a method for identifying a visibility obstacle (2) a computer program product comprising instructions to perform a method for identifying a visibility obstacle (3) an adaptive speed regulating device for a motor vehicle comprising a control installation.