Distance-measurable novel intelligent all-fiber perimeter alarm system

Abstract

The invention relates to the technical field of perimeter protection, and provides a distance-measurable novel intelligent all-fiber perimeter alarm system, which comprises a fiber intrusion detector, a first conduction fiber, a head end data transmission module, a sensing fiber, a tail end data transmission module, an upper computer and a second conduction fiber, and the optical fiber intrusion detector is connected with the head end data transmission module through a first conduction optical fiber; the fiber intrusion detector comprises a narrow-bandwidth laser, a first photoelectric detector, a second photoelectric detector and an acquisition card which are installed together, the head end data transmission module is connected with the tail end data transmission module through a sensing fiber; the head end data transmission module comprises a beam splitter, a first fiber isolator, a second fiber isolator, a first coupler and a second coupler; the beam splitter is arranged corresponding to the narrow-bandwidth laser, the narrow-bandwidth laser emits laser, and the beam splitter splits the laser into two beams of laser. According to the invention, long-distance monitoring can be realized, and the detection sensitivity and the positioning precision are improved.

Description

Technical field[0001]The present invention relates to the field of perimeter protection, in particular, to a distance of a new intelligent full-optical fiber perimetric alarm system.Background technique[0002]With the progress of technology and the development of society, people's demand for security is getting bigger and bigger, and the requirements are also more and higher, especially in the field of large infrastructure.[0003]The airport is used as a passenger flow, and the airport intrusion event is often occurring in recent years; pipe transport is safe, economical, guaranteed, non-pollution, etc., has been widely used at home and abroad, but the oil and gas pipeline has high temperature, high pressure. , Flammable and explosive characteristics, pirate oil molecules, engineering vehicles, etc., activities, activities, will bring significant safety hazards to their normal operations. Therefore, how to find that the above destruction behavior is accurately positioned, and timely a...

AI Technical Summary

Problems solved by technology

[0006] The invention mainly solves the technical problems of limited monitoring range of traditional sensors, high false alarm rate, poor anti-interference, and the fact that the distributed sensing system of the existing Michelson interference technology is not conducive to real-time positioning. Boundary alarm system with simple structure to achieve long-distance monitoring, improve detection sensitivity and positioning accuracy, and reduce costs

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