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Patent Searching and Data


Title:
【発明の名称】3成分地震計
Document Type and Number:
Japanese Patent JP3089399
Kind Code:
B2
Abstract:
A two- or three-component measuring accelerometer based on an operating principle entirely different from that of conventional accelerometers is realized with a simple arrangement and provided as a two- or three-component measuring seismometer. Planar optical fiber rolls (2) whose light propagation characteristics change sensitively in response to changes in the pressure applied thereto are split into more than three separate sections and disposed at the bottom of a columnar or polygonal prism-shaped load member (1). Changes in acceleration acting on the load member (1) are measured on the basis of differences between the light propagation characteristics of the split optical fiber rolls (2-1 to 2-4).

Inventors:
Takao Eguchi
Application Number:
JP6015397A
Publication Date:
September 18, 2000
Filing Date:
February 28, 1997
Export Citation:
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Assignee:
Director, Science and Technology Agency for Disaster Prevention, Science and Technology Agency
International Classes:
G01H1/00; G01H9/00; G01P15/093; G01V1/18; (IPC1-7): G01H9/00; G01H1/00; G01V1/18
Domestic Patent References:
JP1202629A
JP25029U
Attorney, Agent or Firm:
Ryuyoshi Abe (7 outside)