The results of the research of fiber-optical converter of the monitoring system of building constructions

Subject: the results of research of fiber-optic Converter of monitoring system of technical condition of building structures are considered. The formulation of monitoring of technical condition of building structures is given. The methods and means of measurement for monitoring are named. The work of automated stationary systems, which are designed to detect changes in the stress-strain state of building structures in an automated mode, is described. The wide use automated stations on the basis of fiber-optic measuring systems is shown. Advantages of fiber-optic measuring systems over similar systems are given. A brief description of fiber-optic methods and means of measuring distances and displacements of technical objects in space is given. Materials and methods: the aim of the research is formulated and the tasks for its achievement are set. The list of methods and means of monitoring of building structures is given. The spectral method of low-coherence interferometry was chosen for the study, which consists in measuring the radiation power spectrum with subsequent mathematical processing of this spectrum. A brief description of the spectral method of fiber-optic low-coherence interferometry is given and its advantages are analyzed. The main advantage of the spectral method of fiber-optic low-coherence interferometry is the high accuracy of measurements of physical quantities. The advantages of fiber-optic sensors to achieve this goal over other devices are considered and justified. Results: the design of fiber-optic sensors of temperature and deformation has been developed. Investigated the practical application of fiber-optical sensor operating according to the method of low-coherence spectral interferometry of, for the decision of tasks of monitoring of technical condition of building structures on the example of monitoring of deformation of the fastening element of the building structure in the process of operation technology of manufacturing of fiber-optic sensors. Designs of the fixing devices equipped with fiber-optic sensors are developed. The technique and experimental setup for testing fixing devices equipped with fiber-optic sensors are developed. The results of their tests are presented. Conclusions: based on the results of the work, conclusions and recommendations for further research are formulated. The results of the research have been repeatedly published in various scientific periodicals. The work is intended for complex generalization of earlier achieved results and setting of tasks of further researches. Application of the spectral method of fiber-optic low-coherence interferometry allows to provide not only high accuracy and reliability of measurement of deformations of structural building elements, but also complex construction systems for various purposes in the process of their research, design, manufacture and operation. This makes it possible to recommend the use of fiber-optic converters as sensors in measuring systems for monitoring of building structures