Multi-dimensional and multidirectional stress-strain monitoring system

A stress-strain and monitoring system technology, applied in measurement devices, instruments, etc., can solve the problems of spatial multi-dimensional and multi-directional stress-strain distributed optical fiber monitoring without public research results, and achieve a complete and novel design concept, high precision, and low monitoring costs. Effect
CN103575332AActive Publication Date: 2014-02-12HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2014-02-12

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Abstract

The invention discloses a multi-dimensional and multidirectional stress-strain monitoring system. The multi-dimensional and multidirectional stress-strain monitoring system is characterized in that the multi-dimensional and multidirectional stress-strain monitoring system comprises an information collection device (1), an optical fiber monitoring device (2), a data analysis platform (3), a wire collection box (4) and an optical fiber sensing device (5) arranged in a structural body (6) to be monitored, the optical fiber sensing device (5) is used for sensing stress-strain information which is produced by the structural body (6) to be monitored under the action of external factors, the optical fiber monitoring device (2) is connected with the optical fiber sensing device (5) through the wire collection box (4) and conducts distributed type high-precision monitoring on the structural body (6) to be monitored, the information collection device (1) is connected with the optical fiber monitoring device (2) and used for capturing and storing optical fiber monitoring data and digitizing and visualizing monitoring information, and the data analysis platform (3) is connected with the information collection device (1) and used for providing the data preparation function, the graph viewing function, the data basic analysis function and the stress calculation function for a user. The system has extremely strong operability and strong realizability in practical use.
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Description

technical field

[0001] The invention relates to a multi-dimensional and multi-directional stress-strain monitoring system based on PPP-BOTDA technology, which belongs to the application of optical fiber sensing technology in the field of structural health monitoring. Background technique

[0002] In 1864, the dam of the Sheffield Reservoir in the United Kingdom burst, causing 254 deaths; in 1907, the Quebec Bridge in Canada suddenly collapsed, killing 74 people; in 2000, a natural gas pipeline in Carlsbad, California, leaked and exploded, killing 12 people. A large number of cases have shown that major water conservancy and civil engineering are inevitably affected by material performance degradation and adverse environmental loads during the ultra-long service period, which can easily lead to abnormal service behavior of engineering structures. Some catastrophic events may occur. In China, with the construction of a large number of civil and military projects, the signific...

Claims

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