Method and device for detecting a rotating wheel
US9507014B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Sep 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is described for detecting a rotating wheel of a vehicle that is travelling on a roadway in a travel direction, the wheels of which are at least partially exposed laterally, the method comprising: emitting an electromagnetic measurement beam having a known temporal progression of its frequency onto a first section above the roadway in a direction in a slant with respect to the vertical and normally or at a slant with respect to the travel direction; receiving a reflected measurement beam and recording the temporal progression of its frequencies, relative to the known progression, as a reception frequency mixture progression; and detecting a frequency band, which is continuously inclining or declining over a period of time, in the reception frequency mixture progression as a wheel. A device for conducting the method is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.