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Sector subnetwork module of fibre-optical raster

A fiber grating and sensing fan technology, applied in the field of sensor network models, can solve problems such as no protection measures and strategies, no consideration of survivability in fiber grating sensor networks, and harsh working environments

Inactive Publication Date: 2007-09-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, for those projects and equipment that need real-time monitoring, such as: dams, etc., the working environment is relatively harsh, and high requirements are placed on the survivability of the sensor network. It is hoped that when one or several links of the network fail, the can run normally
At present, all kinds of fiber grating sensor networks built for engineering application sites have not considered their survivability, and there are no corresponding protection measures and strategies

Method used

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  • Sector subnetwork module of fibre-optical raster
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  • Sector subnetwork module of fibre-optical raster

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Embodiment Construction

[0016] With reference to Fig. 1, a kind of fiber grating sensor sector subnetwork module for sensor monitoring network system, comprises master node 1 and at least 2 slave nodes 3, and master node 1 is respectively connected with slave node 3 through transmission branch 2, Sensor branches 4 are connected between adjacent slave nodes 3 .

[0017] Referring to Figure 3, the slave node 3 can adopt one of the following technical solutions:

[0018] Solution b: Referring to Figure 3b, the slave node 3 is composed of a 3×3 optical switch 9 and a 1×2 coupler 8, the a port of the 3×3 optical switch 9 is connected to the transmission branch 2, and the b port and the c port are respectively connected to In the sensing branch 4 adjacent to it, the three ports of the 1×2 coupler 8 are respectively connected to the remaining three ports of the 3×3 optical switch 9 .

[0019] Scheme c: Referring to FIG. 3c, the slave node 3 is composed of three 1×2 optical switches 7, wherein the second po...

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Abstract

The invention comprises a master node and at least two slave nodes. The master node is connected to the slave node through transmission branch; there a sensing branch between the slave nodes. The invention is used for improving the disadvantage of grating sensor network that is bad survivability so as to ensure the normal work of sensor in network when one or more links failure.

Description

technical field [0001] The invention relates to a sensor network model used for a sensor monitoring network system of a national key project and important equipment requiring real-time monitoring, belonging to the technical field of industrial control and sensor. Background technique [0002] Fiber Bragg Grating (FBG) sensors are considered to be one of the most promising new fiber optic sensing technologies for practical application. Compared with traditional electronic sensors, it not only has the characteristics of being free from electromagnetic interference, long-distance full-optical measurement, high measurement accuracy, and the sensor detection quantity is wavelength information, but also can distribute multiple sensors into a sensor network. Traditionally, fiber grating sensor networks generally adopt the form of series (wavelength division multiplexing) and parallel (space division multiplexing). The network structure is simple, and theoretical analysis shows that...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/20H04Q11/00H04B10/25H04B10/27
Inventor 孙小菡韦朴
Owner SOUTHEAST UNIV