Title:
Road surface state estimation device
Document Type and Number:
Japanese Patent JP6040096
Kind Code:
B2
Abstract:
The present invention is provided with a light irradiation unit for irradiating laser light so as to scan a road surface, a light reception unit for acquiring reflection intensity values corresponding to each irradiated point on the road surface, and a road surface condition determination device for determining a road surface condition using the reflection intensity values. A set of reflection intensity values acquired for each irradiated point on a road surface (hereafter referred to as a "multipoint reflection intensity value set") defines the relationship between the irradiation positions in the far-near direction from the light irradiation unit and the reflection intensity values, which are dependent on the road condition. The road surface condition determination device is created through machine learning using, as learned data, a plurality of multipoint reflection intensity value sets acquired for a plurality of road surfaces having different known road surface conditions and determines and outputs a road surface condition using, as input, a multipoint reflection intensity value set acquired for a road surface having an unknown road surface condition.
Inventors:
Yoshihiro Suda
Aki Masahiko
Kimihiko Nakano
Rojana Arper Thira Pat
Toshiki Isogai
Aki Masahiko
Kimihiko Nakano
Rojana Arper Thira Pat
Toshiki Isogai
Application Number:
JP2013105920A
Publication Date:
December 07, 2016
Filing Date:
May 20, 2013
Export Citation:
Assignee:
国立大学法人 東京大学
株式会社デンソー
株式会社デンソー
International Classes:
G01N21/17; B60T8/172; B60T8/174; B60W40/06
Domestic Patent References:
| JP2009199154A | ||||
| JP4054600A | ||||
| JP2011174794A |
Foreign References:
| WO2011158306A1 | ||||
| WO2011095605A1 |
Other References:
松浦充保、外2名,隊列走行におけるレーザレーザ白線検知システム(第2報),自動車技術会 学術講演会前刷集,2010年 9月29日,No.145-10,第1頁-第4頁
Attorney, Agent or Firm:
Shigeru Inaba