Device for detecting low-pressure state of tire
US10336142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Aug 25, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2019/004
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Provided is a device for detecting a low-pressure state of a predetermined tire, comprising an index value calculation unit, a resonance frequency calculation unit and a low-pressure detection unit. The index value calculation unit calculates a low-pressure index value from wheel speed information of front and rear tires, the low-pressure index value being obtained by comparing rotation speeds of the front and rear tires. The resonance frequency calculation unit calculates a resonance frequency from wheel speed information of a tire. The low-pressure detection unit eliminates an influence of an imposed load on a vehicle and detects the low-pressure state of the predetermined tire based on: a predetermined parameter that indicates a linear relationship between the resonance frequency and the low-pressure index value under a low-pressure condition of the predetermined tire; the low-pressure index value thus calculated; and the resonance frequency thus calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.