Mixed type double-layer optical intelligent sensor network with bidirectional expandability

Abstract

The invention provides a mixed type double-layer optical intelligent sensor network with bidirectional expandability. The mixed type double-layer optical intelligent sensor network comprises a double-layer structure including a terminal node layer and a sensor network layer. The terminal node layer produces a modulating signal and generates spectrum, conducts wavelength conversion and broadens the spectrum, decodes an optical code diversion multiple access signal, demodulates and displays in real time. The sensor network layer comprises n sensor network sublayers, codes the optical code diversion multiple access signal, returns to a wavelength router, and then transmits to a receiver. Separated type and distributed type sensor units or sensors in the sensor network sublayers are mixed and networked. The wavelength router is increased and the number of the sublayers is expanded longitudinally; various topological structures are selected by the sensor units or the sensors so as to achieve expansion of the sensor units or the sensors and have the bidirectional expandability. A mixed type double-layer network coordinates and works, and demodulation information is displayed on a computer in real time. A threshold value is set, and if a demodulation valve reaches the threshold value, alarm is conducted. Meanwhile, the mixed type double-layer optical intelligent sensor network can be connected to other terminal equipment to remind operators of removing hidden danger and nip in the bud.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensor networks, and in particular relates to a hybrid double-layer optical fiber intelligent sensor network with bidirectional scalability that integrates multiple and discrete sensor subnets and distributed sensor subnets Networking technology. Background technique [0002] Relying on the anti-magnetic, anti-electricity and anti-interference characteristics of optical fiber, optical fiber sensing technology has become an important research field of optical fiber technology by combining with optical fiber communication technology with its unique advantages. With the progress of society and the development of science and technology, the requirements for optical fiber sensing technology are getting higher and higher. At present, optical fiber sensing technology is developing in the direction of multi-parameter, high precision, long distance and networking. [0003] The optical fiber sensor ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-type, multi-parameter, multi-topology, large-capacity, bidirectionally scalable hybrid double-layer optical fiber intelligent sensor network, which solves the problem of single sensor type, small capacity and high sensitivity in the current sensor network. Disadvantages of low and poor access scalability

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