Device for detecting vehicles
US7289040B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | May 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field sensor is provided alongside a roadway in order to detect vehicles. A permanent magnet is installed in the roadway at such a distance from the magnetic field sensor that the magnetic field of the permanent magnet is stronger than the geomagnetic field at the magnetic field sensor
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.