- Patent Title: Road surface condition determining method, road surface condition outputting method, road surface condition determining device and road surface condition output equipment
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Application No.: US14423943Application Date: 2014-03-19
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Publication No.: US09752289B2Publication Date: 2017-09-05
- Inventor: Tomoko Jinno , Ryota Ono , Yasuko Yamamoto
- Applicant: KOMATSU LTD.
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: Komatsu Ltd.
- Current Assignee: Komatsu Ltd.
- Current Assignee Address: JP Minato-ku, Tokyo
- Agency: Fish & Richardson P.C.
- International Application: PCT/JP2014/057589 WO 20140319
- International Announcement: WO2015/140966 WO 20150924
- Main IPC: G01C21/00
- IPC: G01C21/00 ; E01C23/01 ; B60W40/06 ; G01C21/26 ; G01C7/04
Abstract:
A road surface condition determining method according to the invention includes: detecting a suspension pressure of a dump truck during a travel of the dump truck; calculating a maximum amplitude and a frequency of a detection value of the suspension pressure in a predetermined period of time; and determining a road surface condition based on the maximum amplitude and the frequency.
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