METHOD TO MEASURE VARIATION OF TEMPERATURE OF OBJECT RELATIVE TO SPECIFIED TEMPERATURE

摘要

FIELD: measurement equipment.SUBSTANCE: method is proposed to measure object temperature with the help of a sensitive element (SE), which represents a standard two-input resonator on surface acoustic waves (SAW). Measurements are carried out in the following manner. Resonant frequency of the resonator is measured at the specified temperature. Then at this frequency they measure variation of phase of a reflected signal from a converter. Phase variations correspond to variations of temperature in the neighbourhood of specified temperature. Quantitative compliance is achieved when proper calibration is used. With such measurement method (without averaging) higher resolution is achieved by temperature (at least two orders of magnitude) compared to available analogues.EFFECT: increased accuracy of measurement of object temperature in real time.6 dwg