A method for detecting a diaphragm of an electroacoustic sensor covered with snow/ice (e.g., an ultrasonic sensor on a vehicle). The method includes: a) after a sensor operation start, a temperature sensor, disposed in the interior of a sensor housing, ascertains a temporal temperature characteristic of an interior of the electroacoustic sensor, where the temperature of the sensor interior at the beginning of the sensor operation is below 0° C. In b), a second time range of the ascertained temperature characteristic is detected by a processing unit in that the temperature increase drops significantly in comparison with a temporally preceding first range. In c), if such a time range is detected, then it is inferred therefrom that the diaphragm of the electroacoustic sensor is covered with snow/ice. In d), if it was detected that a diaphragm of the electroacoustic sensor is covered with snow/ice, a warning is output to the driver.


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    Titel :

    METHOD AND DEVICE FOR DETECTING AN ICE-COVERED ELECTROACOUSTIC SENSOR


    Beteiligte:

    Erscheinungsdatum :

    2019-01-03


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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