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A fiber-optic current sensor for aerospace applicationsA robust, accurate, broad-band, alternating current sensor using fiber optics is being developed for space applications at power frequencies as high as 20 kHz. It can also be used in low and high voltage 60 Hz terrestrial power systems and in 400 Hz aircraft systems. It is intrinsically electromagnetic interference (EMI) immune and has the added benefit of excellent isolation. The sensor uses the Faraday effect in optical fiber and standard polarimetric measurements to sense electrical current. The primary component of the sensor is a specially treated coil of single-mode optical fiber, through which the current carrying conductor passes. Improved precision is accomplished by temperature compensation by means of signals from a novel fiber-optic temperature sensor embedded in the sensing head. The technology contained in the sensor is examined and the results of precision tests conducted at various temperatures within the wide operating range are given. The results of early EMI tests are also given.
Document ID
19900013457
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Patterson, Richard L.
(NASA Lewis Research Center Cleveland, OH., United States)
Rose, A. H.
(National Inst. of Standards and Technology Boulder, CO., United States)
Tang, D.
(National Inst. of Standards and Technology Boulder, CO., United States)
Day, G. W.
(National Inst. of Standards and Technology Boulder, CO., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-TM-103152
NAS 1.15:103152
E-5513
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference
Location: Reno, NV
Country: United States
Start Date: August 12, 1990
End Date: August 17, 1990
Sponsors: SAE, ACS, ASME, AIChE, IEEE, AIAA
Accession Number
90N22773
Funding Number(s)
PROJECT: RTOP 590-13-41
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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