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Title: Omnidirectional fiber optic tiltmeter

Abstract

A tiltmeter is provided which is useful in detecting very small movements such as earth tides. The device comprises a single optical fiber, and an associated weight affixed thereto, suspended from a support to form a pendulum. A light source, e.g., a light emitting diode, mounted on the support transmits light through the optical fiber to a group of further optical fibers located adjacent to but spaced from the free end of the single optical fiber so that displacement of the single optical fiber with respect to the group will result in a change in the amount of light received by the individual optical fibers of the group. Photodetectors individually connectd to the fibers produce corresponding electrical outputs which are differentially compared and processed to produce a resultant continuous analog output representative of the amount and direction of displacement of the single optical fiber.

Inventors:
;
Issue Date:
OSTI Identifier:
7136321
Application Number:
ON: DE84011109
Assignee:
Dept. of Energy SNL; ERA-09-026895; EDB-84-085639
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; INCLINATION; MEASURING INSTRUMENTS; FIBER OPTICS; ON-LINE MEASUREMENT SYSTEMS; ON-LINE SYSTEMS; 440300* - Miscellaneous Instruments- (-1989)

Citation Formats

Benjamin, B.C., and Miller, H.M. Omnidirectional fiber optic tiltmeter. United States: N. p., 1983. Web.
Benjamin, B.C., & Miller, H.M. Omnidirectional fiber optic tiltmeter. United States.
Benjamin, B.C., and Miller, H.M. Thu . "Omnidirectional fiber optic tiltmeter". United States.
@article{osti_7136321,
title = {Omnidirectional fiber optic tiltmeter},
author = {Benjamin, B.C. and Miller, H.M.},
abstractNote = {A tiltmeter is provided which is useful in detecting very small movements such as earth tides. The device comprises a single optical fiber, and an associated weight affixed thereto, suspended from a support to form a pendulum. A light source, e.g., a light emitting diode, mounted on the support transmits light through the optical fiber to a group of further optical fibers located adjacent to but spaced from the free end of the single optical fiber so that displacement of the single optical fiber with respect to the group will result in a change in the amount of light received by the individual optical fibers of the group. Photodetectors individually connectd to the fibers produce corresponding electrical outputs which are differentially compared and processed to produce a resultant continuous analog output representative of the amount and direction of displacement of the single optical fiber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {6}
}