Tire condition detection system and induction feed method thereof
US8044783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Apr 16, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0444
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An external solenoid positioned external to a tire, and an internal solenoid provided inside a valve of the tire, which transmits and receives power by an alternating magnetic field in a predetermined high frequency band that generates an induced alternating current in the internal solenoid, is used as a new source of power for a tire pressure/temperature detection device instead of a battery. If the alternating magnetic field in a predetermined high frequency band is well matched to the physical structure and electrical structure of the tire, then, in the space between the tire and a wheel, an induced alternating magnetic field component is distributed that is substantially parallel to the axis of rotation of the tire. If the internal solenoid is matched to the direction of maximum magnetic field reception, when the tire rotates, and when the position of the wheel is stopped, substantially stable power may be received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.