The problems of operation of measuring systems and changes in their parameters due the influence of various kinds of destabilizing factors, including time, are considered, and the primary elements of the measuring path – sensors and converting equipment – are most susceptible to such an influence. The deviation of the values of the parameters of the measurers from the nominal values leads to significant errors in the assessment of the unknown input signal, which necessitates the current (during operation) identification of the measurer. The problem of the current identification of the measurer parameters under unknown input influences is solved. The identification procedure is carried out by introducing an additional channel for transforming the measured value in the spatial domain. In this case, the transformation of the measured value in the additional channel of the structurally redundant measurer has the form of a preliminary functional (nonlinear) transformation of the m-th power over the input signal. The solution to the current identification problem is considered for the linear static characteristic of the main channel of the measuring transducer. An additional equation in solving the problem of current identification and conducting metrological self-control in an intelligent sensor is presented in the form of a regression relationship between the output signals of the additional and main channels of the structurally redundant measurer. The unknown parameters of the regression equation are determined from the results of processing the time samples of the output signals of the additional and main channels using the least squares method. The dependences of the rms measurement error of the input quantity on the rms value of the measurement noise in the output signals of the structurally redundant measurer, the dynamics of the input signal change and the power of nonlinearity m of the preliminary functional transformation in the additional measuring channel are presented. In the course of research, it was revealed that the shape and spectrum of the input signal do not significantly affect the measurement accuracy. It is shown that the highest measurement accuracy is provided by the preliminary quadratic conversion of the input signal in the additional channel of the minimum-redundant sensor. The research results can be used for metrological selfcontrol in smart sensors or smart measuring systems.

The article covers the issue of respiratory diseases in higher education, as the problem is important and necessitates attention to the lifestyle of students of higher education, which has several shortcomings that lead to deteriorating health associated with the respiratory system. First of all, it is the harmful effects of polluted air, bad habits, hypothermia, lack of exercise, poor and irrational nutrition. The main factors that contribute to respiratory diseases during a pandemic have been identified. The materials of the modern scientific literature of the preventive direction on reduction of morbidity of respiratory system are analyzed, the basic factors of risk of occurrence of diseases of respiratory system of student's youth and methods of prevention are defined. Data on the level of pollutant emissions into the atmosphere from stationary sources and road transport are provided and the most probable period of the year for respiratory diseases is identified. A survey on smoking, alcohol, and drug use among adolescents in Ukraine was studied. The main causes of poor and irrational nutrition and the impact of lack of exercise on the level of physical development of young people are described.

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