Road-ice detecting sensor, method for installing same, and road-ice detecting method
US7358858B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 17, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | May 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/3206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A road-ice detecting sensor includes: a temperature sensing member of T shape made of a highly heat conductive metal, having a temperature sensor to be grounded onto a road and a fin part erected from this temperature sensor; an optical fiber having an FBG bonded onto the fin part of the temperature sensing member; and a case having a heat insulating member surrounding the fin part of the temperature sensing member and the optical fiber. A plurality of number of the read-ice detecting sensors are installed on a road, connected to one another via an optical cable. Pulsed light is launched into one of the ends of the optical cable, and beams of reflected light from the respective road-ice detecting sensors are received to measure the road temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.