RELIABILITY EVALUATION OF INFORMATION-MEASURING SYSTEMS OF THERMOPHYSICAL PROPERTIES OF MATERIALS UNDER THE ACTION OF DESTABILIZING FACTORS

Author(s):  
Z.M. Selivanova ◽  
◽  
T.A. Hoang ◽  
2021 ◽  
Vol 18 (4) ◽  
pp. 43-52
Author(s):  
V. I. Santoniy ◽  
Ya. I. Lepikh ◽  
L. M. Budianskaya ◽  
V. I. Yanko

The optimization of the methods for the formation of the spatial-energy distribution of the probing radiation power and the processing the receiving signal by the locating laser information-measuring systems (LIMS), taking into account the spatial-temporal structure, is carried out, and the analysis of the existing methods of their processing is carried out too. An assessment of the integral criteria for the LIMS functioning when operating in conditions of interference has been made. The calculation of the parameters of the LIMS main links was carried out, taking into account the correlation between the resolution of the optical system and the capabilities of object detection, recognition and classification. A method was developed for the formation of the probing radiation density distribution and the receiving signal processing, taking into account its space-time structure, which made it possible to determine the optimal duration of the laser probe pulse. The determined duration makes it possible to eliminate errors in measuring the parameters of an object's movement under the influence of a combination of destabilizing factors and a lack of signal processing time, which will ensure the accuracy of the target detection and recognition.


Author(s):  
A. D. Loskutova ◽  
A. P. Korolev

The analysis of properties of thermosensitive elements used in devices for monitoring the temperature and thermophysical properties of the medium and materials is carried out. Thermal converters made of various materials are considered: metals, semiconductors, oxides. The sensitivity to infrared radiation of the considered elements is analyzed. The range of measured temperatures and the linearity of the output characteristics of the converters are investigated. A conclusion is made about the purposefulness of using one or another type of thermosensitive elements.


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