Title:
【発明の名称】温度補償付き交番電流測定用の光学的測定方法及び該方法を実施するための装置
Document Type and Number:
Japanese Patent JP2663999
Kind Code:
B2
Abstract:
PCT No. PCT/DE94/00248 Sec. 371 Date Sep. 29, 1995 Sec. 102(e) Date Sep. 29, 1995 PCT Filed Mar. 10, 1994 PCT Pub. No. WO94/24572 PCT Pub. Date Oct. 27, 1994An alternating current in a conductor is measured using a Faraday element. The Faraday element is disposed around the conductor and linearly polarized light is supplied to the device. The plane of polarization of the linearly polarized light is rotated through a measuring angle in the Faraday element. This light is divided into two light signals having planes of polarization at right angles to each other. The two light signals are converted into corresponding electrical signals by optoelectric converters. These electric signals are split into their direct signal components and their alternating signal components. The quotients of the difference and sum of the alternating signal components as well as the quotient of the difference and sum of the direct signal components are calculated. A temperature-compensated measuring signal is derived from these calculated quotients.
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Inventors:
BOTSUSERUMAN TOOMASU
Application Number:
JP51945894A
Publication Date:
October 15, 1997
Filing Date:
March 10, 1994
Export Citation:
Assignee:
JIIMENSU AG
International Classes:
G01R15/24; G01R19/00; (IPC1-7): G01R15/24; G01R19/00
Domestic Patent References:
| JP2143173A |
Attorney, Agent or Firm:
Toshio Yano (3 outside)