Title:
AIR PRESSURE MANAGEMENT DEVICE, AIR PRESSURE MANAGEMENT METHOD, AND AIR PRESSURE MANAGEMENT PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/039137
Kind Code:
A1
Abstract:
An air pressure management device 10 according to one embodiment of the present invention comprises: a temperature-adjusted air pressure calculation unit 17 which calculates a temperature-adjusted air pressure of a tire on the basis of an acquired temperature and air pressure of a tire; an air pressure decline rate calculation unit 18 which, from an amount of change in the temperature-adjusted air pressure during a predetermined period of time, calculates an air pressure decline rate indicating the decline trend of the air pressure of the tire; an air pressure decline rate threshold setting unit 20 which sets an air pressure decline rate threshold that corresponds to an acquired heat history amount by using a threshold table 20a in which air pressure declining rate threshold values are defined in association with heat history amounts of the tire; and a first determination unit 22 which, on the basis of the air pressure declining rate thus calculated and the air pressure declining rate threshold value thus set, determines whether the air pressure of the tire is abnormal or not.
Inventors:
IIZUKA HIROSHI (JP)
Application Number:
PCT/JP2021/029970
Publication Date:
February 24, 2022
Filing Date:
August 17, 2021
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C23/04
Foreign References:
| JP2011016462A | 2011-01-27 | |||
| JP2012218582A | 2012-11-12 | |||
| JP2008298723A | 2008-12-11 | |||
| JP2004279217A | 2004-10-07 | |||
| JP2016124395A | 2016-07-11 | |||
| JP2019014401A | 2019-01-31 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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