An implementation method of a warning system based on optical fiber grating and intelligent coating sensors
An intelligent coating, fiber grating technology, applied in instruments, scientific instruments, optical devices, etc., can solve the problems of a single intelligent coating sensor, high false alarm rate, and achieve good anti-interference, high monitoring accuracy, and light weight Effect
Inactive Publication Date: 2017-12-12
BEIHANG UNIV
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In the structural health monitoring system, it is necessary to give an alarm when there is a crack in the structure, but the existing technology is mostly based on a single smart coating sensor, which can monitor the structure and has been used in many fields. However, its high false alarm rate limits its popularization and application.
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[0032] A method for realizing an alarm system based on a fiber grating and an intelligent coating sensor of the present invention, see figure 1 As shown, the specific steps are as follows:
[0033]Step 1: Build a structural health monitoring hardware platform for fiber gratings and smart coating sensors, and determine the development board, programming language and processor used by the hardware platform. The present invention uses the integrated development board Miz702 (Nanjing Millian Electronics) whose model is XC7Z020-1CLG484I. This integrated development board adopts a platform combining FPGA and ARM processor, and adopts the development software whose version is "Vivado2015.4" to develop;
[0034] Step 2, set up the structural health monitoring software platform of fiber grating and intelligent coating sensor, determine programming language, the present invention uses Microsoft C / C++ compiler version 6.0 (being VC++6.0) to carry out the writing of program, build on this...
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The invention provides an implementation method of a warning system based on optical fiber grating and intelligent coating sensors. The method comprises the steps of: firstly, establishing a structure health monitoring hardware platform and collecting sensor data; secondly, establishing a health monitoring software platform; thirdly, creating clocks to control data collection of an optical fiber grating sensor and an intelligent coating sensor; fourthly, with the hardware platform as a client and the software platform as a server end, performing connection based on a network communication protocol; performing normalization processing on optical fiber grating and intelligent coating sensor data; sixthly, determining weights alpha and beta for the optical fiber grating and intelligent coating sensor data subjected to normalization processing; displaying warning conditions of positions of a current structure in the software platform based on the obtained warning index value xi. The invention achieves a warning system based on optical fiber grating and intelligent coating sensors; the system has the function of warning for structures and is suitable for warning of structures having high precision requirements.
Description
technical field [0001] The invention provides a realization method of an alarm system based on fiber grating and smart coating, which can collect, transmit and process the signals of fiber grating and smart coating sensors, and fuse the data of the two sensors on this basis The invention realizes the warning of the structure by analyzing the fused data, and belongs to the technical field of structural health monitoring. Background technique [0002] With the emphasis on the reliability of products and equipment in various fields, the development of structural health monitoring is extremely rapid. In the structural health monitoring system, it is necessary to give an alarm when there is a crack in the structure, but the existing technology is mostly based on a single smart coating sensor, which can monitor the structure and has been used in many fields. However, its high false alarm rate limits its popularization and application. The optical fiber grating sensor can monitor...
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IPC IPC(8): G01B11/16G01B7/16G01N27/04
CPCG01B7/18G01B11/18G01N27/041
Inventor 张卫方任飞飞魏巍李英武张萌梁小贝金博
Owner BEIHANG UNIV