Open AccessFrequency division sensor signal by controlled and interfering parameters
Author(s) -
T. G. Hasanov,
E. Z. Batmanov,
M. R. Guseinov
Publication year - 2022
Publication title -
vestnik dagestanskogo gosudarstvennogo tehničeskogo universiteta. tehničeskie nauki
Language(s) - English
Resource type - Journals
eISSN - 2542-095X
pISSN - 2073-6185
DOI - 10.21822/2073-6185-2021-48-4-27-33
Subject(s) - electrical impedance , capacitance , signal (programming language) , capacitor , equivalent circuit , capacitive sensing , capacitance probe , acoustics , variable capacitor , output impedance , materials science , lcr meter , dielectric , control theory (sociology) , electrical engineering , physics , voltage , optoelectronics , computer science , engineering , electrode , control (management) , quantum mechanics , artificial intelligence , programming language
Objective. The aim of the study is the possibility of obtaining the impedance of the controlled and interfering parameters using the example of a capacitor sensor. Method. The study is based on the determination of the analytical relationship between the change in the impedance of the sensor and the frequency of the current in which the capacitance of the capacitor is excited. Result. Having determined the resistance of individual circuit elements, you can find the impedance of the equivalent circuit at any fixed frequency. An equation for the impedance of the sensor is obtained, reflecting the dependence of the output signal on the change in both the controlled humidity and the interfering parameter - the dielectric constant of oil at any frequency in the studied range. The existence of the frequency parameter for the separation of information contained in the output signal of the measuring circuit has been proved. Conclusion. If the parametric separation of the signal is possible, the output value of the sensor can be automatically corrected for the change in the dielectric constant of the "dry" oil, and continuous measurement of the controlled moisture can be carried out.