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Data processing method of multi-fiber grating rebar corrosion sensor system

A steel bar corrosion and data processing technology, which is applied in the fields of weather resistance/light resistance/corrosion resistance, instruments, scientific instruments, etc., can solve complex and difficult data processing problems

Active Publication Date: 2019-08-16
TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +2
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  • Abstract
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Problems solved by technology

Although the multi-sensor system has the above advantages, the data processing of the multi-sensor system is more complex and difficult than that of a single sensor due to the large amount of collected data information, a wide range, and the possible interrelationships between the data.

Method used

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  • Data processing method of multi-fiber grating rebar corrosion sensor system
  • Data processing method of multi-fiber grating rebar corrosion sensor system
  • Data processing method of multi-fiber grating rebar corrosion sensor system

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Embodiment Construction

[0054] The technical solution of the present invention will be further described below in conjunction with specific embodiments.

[0055] A reinforced concrete component is equipped with 10 sensor groups, each corrosion sensor reads 6 times, and each compensation sensor reads 1 time. The average initial wavelength of the corrosion sensor, the initial wavelength of the compensation sensor and the wavelength readings collected at a certain time are shown in Table 1. The wavelength readings collected at a certain time by the corrosion sensor are shown in Table 2. The corrosion rate of the sensor group ρ = 2.26916 (Δλ) 2 +0.64302Δλ+0.23229, where Δλ is the wavelength change. The significance level of the t-test of the corrosion rate obtained by the sensor group is 0.05, the coefficient γ for the consistency test of the average corrosion rate is 1.0, and the threshold value used to establish the fuzzy interval of the corrosion rate is 0.5. According to the data in Table 1 and Table ...

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Abstract

The invention discloses a data processing method of a multi-fiber bragg grating reinforcing steel corrosion sensor system. The method includes wavelength data preprocessing, inspection and rejection of abnormal data, consistency test, Bayes estimation based data fusion, fuzzy interval establishment of data fusion values and other processes. Multiple readings of each sensor set are employed to reject abnormal data, and multi-sensor data fusion is adopted to improve the reliability and robustness of the sensor system, extend the observation range of time or space, enhance the credibility and accuracy of the system data, and increase the utilization of information. The fuzzy interval of corrosion rate fusion values can better reflect the characteristic of uneven reinforcing steel corrosion.

Description

Technical field [0001] The invention relates to data processing of a corrosion sensor system, in particular to a data processing method of a multi-fiber grating steel corrosion sensor system. Background technique [0002] Rebar corrosion monitoring technology can obtain real-time information on the corrosion of steel bars in concrete. It is not only an effective means to analyze the causes of steel corrosion as early as possible, but also provides necessary conditions for timely response measures. It is of positive significance for ensuring structural durability and reducing subsequent maintenance costs. At present, it has been widely used in reinforced concrete structures in severe corrosive environments such as port terminals, cross-sea bridges, and subsea tunnels. The fiber grating steel corrosion sensor integrates sensing and information transmission, and has the advantages of strong anti-interference, small size, and high precision. It has become a new hot spot in the develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 张文锋马化雄陈韬李云飞刘凯杨太年唐聪马悦
Owner TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG
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