Title:
A tire air pressure drop detecting device, a method, and a program
Document Type and Number:
Japanese Patent JP6063428
Kind Code:
B2
Abstract:
A tire pressure decrease detection apparatus comprising a rotation speed information detection unit for detecting rotation speed information of wheels of a vehicle, a resonance frequency estimate unit for time-series estimating a torsional resonance frequency of the rotation speed information from the rotation speed information obtained by the rotation speed information detection unit, and a judgment unit for judging a decrease in pressure of tires installed in the wheels based on the estimated torsional resonance frequency. The resonance frequency estimate unit includes a noise removal unit for removing a noise superimposed on a wheel speed signal serving as the rotation speed information for each of the wheels with using an active noise control technology.
Inventors:
Minami Yanase
Application Number:
JP2014229076A
Publication Date:
January 18, 2017
Filing Date:
November 11, 2014
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C23/06; H03H17/06; H03H21/00
Domestic Patent References:
| JP2014035207A | ||||
| JP2008004150A | ||||
| JP8272378A |
Foreign References:
| EP1674302A1 |
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office