Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-09-21
1991-02-05
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023110, H01J 516
Patent
active
049907697
ABSTRACT:
A fiber-optical pressure sensor, comprising a pressure member (21, 22) which encloses the optical fiber (20) in a sandwich-like manner, and used for the detection of intruders is provided. The pressure sensor is formed by a continuous cable which can be buried and which comprises at least one optical fiber (20) which is capable of detecting, along its entire length, components of a pressure applied to a surface zone of the ground, notably by an intruder. The cable can be wound along an axis of rotation which is substantially perpendicular to its longitudinal direction and can be bent in a direction which is substantially parallel to this axis of rotation. The pressure member may have a continuous or a segmented structure. It may be formed by plates (21, 22) or strips (21, 22) which are rigid or semi-rigid. The pressure member may comprise ribs (27, 28, 29) which serve to capture forces which act in the lateral direction.
REFERENCES:
patent: 4342907 (1982-08-01), Macedo et al.
patent: 4477725 (1984-10-01), Asawa et al.
patent: 4488040 (1984-12-01), Rowe
patent: 4552026 (1985-11-01), Knudsen et al.
patent: 4560016 (1985-12-01), Ibanez et al.
patent: 4678903 (1987-07-01), Wlodarczyk et al.
patent: 4750796 (1988-01-01), Shibata et al.
patent: 4814563 (1989-03-01), Langston
patent: 4836030 (1989-06-01), Martin
Delmas Gilles
Hazan Jean-Pierre
Nagel Jean-Louis
Steers Michel
Bartlett Ernestine C.
Messinger Michael
Nelms David C.
U.S. Philips Corp.
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