S-shaped optical cable in bent arrangement for safety early warning system and use method thereof

Abstract

The invention belongs to the technical field of optical cables and particularly relates to an S-shaped optical cable in bent arrangement for a safety early warning system and a use method thereof. In the S-shaped optical cable in bent arrangement, two optical fibers and an optical fiber ribbon are straightly placed into a loose sleeve so as to fill an ointment water-resistant component; and a tensile component with small bending radius outside the loose sleeve is formed by nine strands of 850dtex aramid yarns and three strands of water-resistant aramid yarns and warped by an inner protective layer and an outer protective layer. In the invention, the loose sleeve which has the advantages of small friction coefficient, self wettability, low water absorption and excellent chemical resistanceand oil resistivity is adopted; and the strict thickness and width of the optical fiber ribbon and the outer diameters and wall thicknesses of the loose sleeve, the inner protective layer and the outer protective layer limit the special measures such as the optical fiber allowance and the like of the optical fiber and the optical fiber ribbon, thus the minimum bendable radius of the optical fiberis 15cm and the requirement for two-in-one sensing transmission is realized. The S-shaped optical cable provided by the invention is suitable for the guard of long-distance and large-scale occasions such as boundary lines, bonded area isolation belts, custom ports and the like and is also suitable for the circumference safety defense of facilities such as airports, bank storehouses, prisons, oil depots and the like.

Description

technical field [0001] The invention belongs to the technical field of optical cables, and in particular relates to an "S"-shaped bent optical cable for a safety warning system and a use method thereof. Background technique [0002] Full-fiber perimeter monitoring Nowadays, terrorist organizations and terrorists are becoming more and more frequent, population flow is increasing sharply, and social instability factors are rising. Therefore, the defense tasks and pressures of national security and national property safety are increasing, making the harmonious society of our country Construction is also facing great challenges. As a result, higher requirements and greater tests have been put forward for the national economic unit's own security system to "anti-sabotage, anti-intrusion, anti-accident" and real-time monitoring and early warning. Among them, perimeter protection (firewall) is the first line of defense , whether it is effective determines whether the unsafe factor...

AI Technical Summary

Problems solved by technology

[0003] Over the years, the traditional perimeter security solutions, such as infrared radiation solutions, video surveillance solutions, microwave radiation solutions, leaking cable solutions, vibration cable solutions, electronic fences, power grids, etc., have made due contributions to social security. Contribution, but limited by some objective technical conditions and other factors, there are still some commonality or lack of individuality, such as electromagnetic interference, signal interference, crosstalk and other interference opportunities increase, sensitivity decreases, false alarm rate, false negative rate increase, etc.

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