Title:
TIRE WEAR DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/122188
Kind Code:
A1
Abstract:
A signal processing unit (13) of a tire-side device (1) is provided with: a condition detection unit (13b) that detects whether the condition of a road surface is wet or other than wet; and a level acquisition unit (13g) and/or a level calculation unit (13e). The level acquisition unit (13g) sets, as a device arrangement location, a portion of a tire (3) that corresponds to an arrangement location of the tire-side device (1), and when it has been detected that the road surface is wet, acquires, from a tire (3) vibration waveform indicated by a detection signal, a peak level value, which is a peak vibration level at the time of treading, that is, the time when the device arrangement location makes contact with the road surface. The level calculation unit (13e) calculates a level value of a vibration level at a post-kick-out region, which is a region after the device arrangement location has left the road surface. A control unit (13) then generates wear data which indicates the peak level value at the time of the treading and/or the level value of the post-kick-out region.
Inventors:
SUZUKI YOICHIRO (JP)
SEKIZAWA TAKATOSHI (JP)
SEKIZAWA TAKATOSHI (JP)
Application Number:
PCT/JP2019/048737
Publication Date:
June 18, 2020
Filing Date:
December 12, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
B60C19/00; B60C11/24; G01M17/02
Domestic Patent References:
| WO2009008502A1 | 2009-01-15 | |||
| WO2009157516A1 | 2009-12-30 |
Foreign References:
| US20060156790A1 | 2006-07-20 | |||
| JP2016190615A | 2016-11-10 | |||
| JP2018167645A | 2018-11-01 | |||
| JP2010215195A | 2010-09-30 | |||
| JP2007099245A | 2007-04-19 | |||
| US20140366618A1 | 2014-12-18 | |||
| JP2020027471A | 2020-02-20 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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