Patent · US Expired

Process and an apparatus for correcting the measuring signals of a fiber optic gyro

US5430544A · kind A · utility

5Cited by

2References

9Claims

0Family size

Assignee

Deutsche Aerospace AG · DE

Inventors

Hans Poisel · Leinburg, DE
Gert Trommer · Munich, DE

Key dates

Filing date	Jan 21, 1994
Grant date	Jul 4, 1995
Priority date	—
Expiry date	Jan 21, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG01C19/725
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In the case of a fiber optic gyro having a 4.times.4-coupler, the two arms of the coupler which are not connected with the fiber coil are each connected with a monitoring detector. From the output signals of these monitoring detectors, in the case of a desired wavelength, a reference or desired quotient is formed. During the operation of the fiber optic gyro, an actual quotient is in each case formed from these output signals and is compared with the stored desired quotient. The wavelength of a semiconductor laser is controlled by controlling the operating current and/or the temperature of the light source (L) such that the two quotients are identical. The measuring signals will then be error free.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.