Abstract
The tasks of practical veterinary medicine related to the development of new methods and tools for the operative diagnosis of inflammatory diseases and traumas of agricultural and domestic animals require the development of fundamentally new methods and equipment for noninvasive diagnosis of the condition of animals.For remote measurement of their own thermal electromagnetic radiation of animals, the radiometric receiver was synthesized behind the criterion of statistical invariance to the AC fluctuations and to the effect of narrow-band interference.The scheme of a synthesized radio receiver is substantiated, which is invariant with respect to the AC fluctuations and completely invariant with respect to a narrow-band harmonic type. The peculiarity of this scheme is that in this radio receiver the input signal coming from the antenna in the input circuit is divided by power into two components, one of which is delayed by the time τ, and then these components are added together in the adder. Then there is amplification followed by division into two components, one of which is delayed for the same time τ, and then these components are multiplied, and their product is averaged.In accordance with the obtained expressions, for the impulse response of the input circuit and the quadratic detection scheme, the structure of the synthesized radio measuring receiver is constructed. For practical purposes, a radio measuring receiver with parameters is made: sensitivity – 10-17 W; frequency range – 30–40 GHz; measuring speed – 0.5 s; measurement accuracy – 0.1–0.2 oC.Practical testing of the radiometric receiver shows the possibility of displaying the temperature of internal tissues, obtaining a visual picture of the heat field, which allows the veterinarian to establish the correct diagnosis.
Highlights
One of the features of the current stage of develop ment of agriculture in Ukraine is the growth of eco nomic and improving the logical preconditions to the level of the needs of industrial livestock, the fusion of veterinary and livestock science with industrial livestock and the strengthening of their influence directly on the production processes
The obtained advantage is due to the fact that the the antenna in the input circuit is divided by power into receiver has eliminated the dependence of the measuretwo components, one of which is delayed by a time τ, and ments on the amplifying coefficient (AC) fluctuations and the action of narrowthen these components are added together in the adder. band noise
An expression is obtained for the impulse response of the input circuit and the quadratic detector without a narrow-band harmonic type noise
Summary
One of the features of the current stage of develop ment of agriculture in Ukraine is the growth of eco nomic and improving the logical preconditions to the level of the needs of industrial livestock, the fusion of veterinary and livestock science with industrial livestock and the strengthening of their influence directly on the production processes. To measure the body tem perature of the animal, a contact method of measuring temperature with a maximum thermometer of Celsius, an electric thermometer is used. Disadvantages of this method are that a malfunction of the thermometer or inept introduction into the rectum often leads to injuries or ruptures of the rectal mucosa, resulting in an inflam matory process. The need to develop a radiometric receiver for the remote measurement of electromagnetic thermal radiation (temperature) of animal organs and tissues is an urgent task.
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