Title:
SENSING FIBER LAYING STRUCTURE, AND CUT SLOPE BREAKING DETECTING DEVICE USING IT
Document Type and Number:
Japanese Patent JP3265413
Kind Code:
B2
Abstract:
PURPOSE: To provide a highly reliable sensing fiber laying structure with little generation of wrong information, and a cut slope breaking detecting device utilizing this laying structure.
CONSTITUTION: This sensing fiber laying structure is formed of a sediment stopping wall 3 planted on a cut slop constructed along a traffic road, an optical fiber laying groove 6 erected along the upper side part of the sediment stopping wall, a plurality of projections 8 provided every prescribed interval in the extending direction of the optical fiber laying groove, and a sensing optical fiber laid so as to be wound on the projection every setting position of the projection and housed in the optical fiber laying groove with a gentle looseness being preliminarily given thereto. The cut slop breaking detecting device utilizes this laying structure.
Inventors:
Hideto Shimazu
Hiroyuki Sasaki
Tatsumi Yamaguchi
Hirayama Tomoho
Takao Kurita
Akira Iwanami Hiro
Akira Hirose
Hiroyuki Sasaki
Tatsumi Yamaguchi
Hirayama Tomoho
Takao Kurita
Akira Iwanami Hiro
Akira Hirose
Application Number:
JP29139894A
Publication Date:
March 11, 2002
Filing Date:
November 25, 1994
Export Citation:
Assignee:
Japan Aviation Electronics Industry Co., Ltd.
East Japan Railway Company
East Japan Railway Company
International Classes:
E02D17/20; G01D21/00; G02B6/00; (IPC1-7): G01D21/00; E02D17/20; G02B6/00
Domestic Patent References:
| JP54150160A | ||||
| JP3233319A | ||||
| JP676172A | ||||
| JP3233319A | ||||
| JP4138307A | ||||
| JP6174501A | ||||
| JP64624U | ||||
| JP64623U | ||||
| JP58501336A |
Attorney, Agent or Firm:
Kusano Taku (1 person outside)