Title:
DETECTION DEVICE FOR PRESSURE REDUCTION IN TIRE
Document Type and Number:
Japanese Patent JP2019111896
Kind Code:
A
Abstract:
To provide a detection device which can accurately detect pressure reduction in a tire.SOLUTION: The detection device is provided that detects pressure reduction in a first tire included in a plurality of tires which are mounted on a vehicle. The detection device comprises: a resonant frequency calculation part which calculates a resonant frequency of a second tire using wheel speed information concerning the second tire included in the a plurality of tires; a relative pressure reduction amount calculation part which calculates a relative pressure reduction amount between the first tire and the second tire using wheel speed information concerning at least the first tire and the second tire; an absolute amount calculation part which calculates an absolute pressure reduction amount in the second tire using the resonant frequency of the second tire, and on the basis of the absolute pressure reduction amount in the second tire and the relative pressure reduction amount between the first tire and the second tire, calculates an absolute pressure reduction amount in the first tire; and a judgement part which judges whether a pressure of the first tire is reduced or not on the basis of the absolute pressure reduction amount in the first tire.SELECTED DRAWING: Figure 3
Inventors:
MAEDA YUSUKE
Application Number:
JP2017245921A
Publication Date:
July 11, 2019
Filing Date:
December 22, 2017
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C23/02; B60C19/00; B60C23/04; B60C23/06; G01L17/00
Domestic Patent References:
| JP2010249597A | 2010-11-04 | |||
| JP2017219546A | 2017-12-14 | |||
| JP2016223949A | 2016-12-28 | |||
| JPH07137512A | 1995-05-30 | |||
| JP2016094067A | 2016-05-26 | |||
| JP2012250630A | 2012-12-20 | |||
| JPH08297063A | 1996-11-12 |
Attorney, Agent or Firm:
Tachibana Kenji
Yamashita Unknown
Tsuyoshi Masuda
Yamashita Unknown
Tsuyoshi Masuda