science-review.ru
Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440
ISSN 2500-0799
ПИ №ФС77-57440
INFLUENCE OF ANISOTROPIC CHARACTERISTICS OF THE WOOD ON DISTRIBUTION OF RADIO-FREQUENCY SIGNAL RFID MARKS
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Are carried out researches on easing a radio-frequency signal distributed in a wood from RFID labels to the scanner. It is revealed, that wood of various breeds differently influences dispersion of electromagnetic energy. Character and size of dispersion depends on weather conditions and seasons. It is connected with properties of wood and structure of a tree — a surface of a tree trunk, a version of a bark of a tree, a crone with quantity(amount) of branches and leaves or needles of needles. Such concept, as the volume fraction of the wood environment influencing complex dielectric permeability is used. The model of a radio channel in wood linen and the formula for modelling interaction from radio-frequency signal UVCH and SVCH of waves with wood flat is offered. Researches were spent on frequencies of 0,9 and 2,4 GHz for information technologies at monitoring a wood.