Sensor for measuring magnetic field strength and temperature for an electric motor
US6262574A · kind A · utility
29Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/093
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for facilitating the measurement of temperature and magnetic field is described. The sensor comprises an optical cable having a distal end encompassed in a sheath of giant magnetoresistive material. Temperature changes alter the spectrum emissivity of the giant magnetoresistive material. Magnetic field changes alter the spectrum changes that occur from distorting the optical fiber that occur when the giant magnetoresistive material distorts the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.