OPTICAL RAIN SENSOR AND METHOD FOR DETERMINING A MINIMAL RAIN DROP SIZE

The present invention relates to a rain sensor detecting the size of rain drops (115) based on optical effects. The rain sensor is mounted on a first surface (102) of a pane (100) in order to detect the amount of moisture (115) on an opposing second surface (104) of the pane (100), the rain sensor c...

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Bibliographische Detailangaben
Hauptverfasser:	DURUPT, Emilien, FOUGERE, Tom
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICS SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR TESTING TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention relates to a rain sensor detecting the size of rain drops (115) based on optical effects. The rain sensor is mounted on a first surface (102) of a pane (100) in order to detect the amount of moisture (115) on an opposing second surface (104) of the pane (100), the rain sensor comprising: at least one emitter (110) for emitting electromagnetic radiation, directed from the first surface (102) to the second surface (104) to form at least two rain-sensitive areas (118) on the second surface (104), at least one receiver (112) for sensing radiation emitted by the emitter and that has been internally reflected at the rain-sensitive areas (118), and for generating an output signal indicative of an amount of moisture (115) on the rain-sensitive area (118), and a control unit (120) that calculates a minimal droplet size based on the output signal.