Vehicle occupant detection device

A vehicle occupant detection device includes light-receiving elements for receiving light from a vehicle interior, and a signal processing part for processing a signal detected by the light detecting elements. A vehicle occupant in the vehicle interior is detected by the signal detecting part on the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FURUKAWA TAKASHI, YOSHIFUKU MASASHI, KUMAKIRI NAOTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY COLORIMETRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION RADIATION PYROMETRY TESTING TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	A vehicle occupant detection device includes light-receiving elements for receiving light from a vehicle interior, and a signal processing part for processing a signal detected by the light detecting elements. A vehicle occupant in the vehicle interior is detected by the signal detecting part on the basis of an image signal obtained by the light-receiving elements. The vehicle occupant detection device has a band-pass filter, which has a frequency range whose transmission band is substantially the same as a sunlight absorption spectrum band, and in which a wavelength of the light received by the light-receiving element is selected in accordance with the transmission band. An object that is to be detected and is present in the vehicle interior is accordingly imaged/detected by the vehicle occupant detection device using a certain wavelength region of near infrared light, and decreases in contrast in relation with sunlight are eliminated.