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Title:
ADHERING MATTER DETERMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/112373
Kind Code:
A1
Abstract:
An adhering matter determination device comprises an irradiation unit (10), a light reception unit (20), and a determination unit (30). The irradiation unit irradiates a plurality of different areas (AR1, AR2) in a transparent plate (WS) with light, the light reception unit converts reflected waves reflected in the plurality of different areas into electric signals, and the determination unit compares at least one among detection signals outputted from the light reception unit with a determination threshold, and determines that there is adhering matter on the transparent plate if the detection signal is lower than the determination threshold. Further, the determination unit compares the plurality of detection signals, determines that the adhering matter is raindrops if a difference between the plurality of detection signals is higher than a dew condensation determination value, and determines that the adhering matter is dewdrops if the difference between the plurality of detection signals is lower than the dew condensation determination value.

Inventors:
ISHIKAWA, Junichi (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
TARUI, Jun (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
OTSUKA, Kiyoshi (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
SUGIURA, Makiko (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
YOSHIDA, Takahiko (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
ARIKI, Tomohide (C/O DENSO CORPORATION, 1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2014/000170
Publication Date:
July 24, 2014
Filing Date:
January 16, 2014
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
G01N21/17; B60S1/08; G01W1/14
Foreign References:
JP2011252856A2011-12-15
JPS61172033A1986-08-02
JPH09257952A1997-10-03
JP2006007936A2006-01-12
JP2007033153A2007-02-08
JP2002500769A2002-01-08
JP2000193759A2000-07-14
JP2011168090A2011-09-01
Attorney, Agent or Firm:
KIN, Junhi (6th Floor, Takisada Bldg. 2-13-19, Nishiki, Naka-ku, Nagoya-cit, Aichi 03, 〒4600003, JP)
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