Patent ID: 8248061
Filing Date: 2012-08-21
Classification: G01D,H02K

Abstract:
1. A method for detecting rotations of a first electric generator with a first rotating rotor that includes a first reference mark thereon, comprising the steps of: directing a first beam of light toward the first rotor such that the first beam of light may be reflected from the first rotor; detecting the first reference mark on the first rotor using light reflected from the first rotor; and generating a first rotor pulse when the first reference mark is detected; directing a second beam of light toward a rotor of a second generator such that the second beam of light may be reflected from the rotor of the second generator; detecting a second reference mark on the rotor of the second generator using light reflected from the rotor of the second generator; and, generating a second rotor pulse when the second reference mark is detected.