A rain sensor including: a received light amount determination unit configured to output a detection result different in when a raindrop is adherent to a windshield glass of a vehicle and when no raindrop is adherent thereto; a temperature/humidity sensor configured to detect temperature and humidity in a vehicle cabin of the vehicle; a contactless temperature sensor configured to contactlessly detect temperature of the windshield glass; a fogging detection unit configured to detect that fogging has occurred or is likely to occur on a vehicle cabin inner side of the windshield glass on a basis of detection signals of the temperature/humidity sensor and the contactless temperature sensor; and a raindrop determination unit configured to determine whether or not a raindrop is adherent to the windshield glass on a basis of a detection result of the received light amount determination unit and a detection result of the fogging detection unit.
RAIN SENSOR
2020-12-10
Patent
Electronic Resource
English
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / G01J Messen der Intensität, der Geschwindigkeit, der spektralen Zusammensetzung, der Polarisation, der Phase oder der Pulscharakteristik von infrarotem, sichtbarem oder ultraviolettem Licht , MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT / G01K MEASURING TEMPERATURE , Messen der Temperatur / G01V Geophysik , GEOPHYSICS |