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Title:
ROAD-SURFACE TYPE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/152986
Kind Code:
A1
Abstract:
Provided is a road-surface type detection device that can discriminate, in real time, an asphalt that is a standard road-surface type from other road-surface types by comparing the size and the frequency of a strain sensor signal waveform excellent in information detection in a low speed area. A road-surface type detection device 10 for estimating a plurality of road-surface types (asphalt, gravel road, grassy road) comprises: at least one of sensor elements 1, 2, 3 for detecting a physical quantity of a vehicle; a road-surface type estimation unit 4; and a storage unit 411 for storing output values that correspond to the plurality of road-surface types for sensor elements 1, 2, 3. One road-surface type (asphalt, gravel road, grassy road) from among the plurality of road-surface types is estimated from the size of the sensor signal waveform output by sensor elements 1, 2, 3. As a result, an asphalt can be discriminated from other road-surface types in real time.

Inventors:
YUKI FUMIO (JP)
HOSOKAWA TAKEO (JP)
SOMA ATSUO (JP)
MONJI TATSUHIKO (JP)
Application Number:
PCT/JP2022/005758
Publication Date:
August 17, 2023
Filing Date:
February 14, 2022
Export Citation:
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Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
B60T8/172; G01N19/02; B60W40/068
Domestic Patent References:
WO2006054976A12006-05-26
Foreign References:
JP2008143312A2008-06-26
JP2005345238A2005-12-15
JP2002002472A2002-01-09
JP2017081380A2017-05-18
JP2007153034A2007-06-21
JP2002205636A2002-07-23
US20170334254A12017-11-23
CN111994068A2020-11-27
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF:
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