Методика расчета звукового давления в проводниках при их идентификации акустическим методом

Abstract

A promising method of identifying conductors in the conditions of agricultural enterprises is the use of acoustic identification tools that allow it to be carried out without disconnecting electrical receivers from the network, without violating the insulation of the identified conductors. The design of devices for acoustic identification requires the development of a methodology for calculating the sound pressure level in conductors when an acoustic signal is applied to them, depending on such factors as the distance from the identification point to the signal source, the cross section and material of the conductor cores, its insulation material, and the frequency of the signal being supplied. (Research purpose) The research purpose is in developing a methodology for calculating the parameters of the propagation of acoustic signals in conductors when identifying them using acoustic signals. (Materials and methods) The article presents the analysis of existing methods for calculating the acoustic characteristics of solids. The article describes the developed methodology for calculating the parameters of acoustic signal propagation in conductors when identifying them using acoustic signals and tested it using practical tests. (Results and discussion) The main parameter of acoustic signals in conductors when they are identified by acoustic means is the sound pressure level. Authors have developed a method for calculating the sound pressure level in conductors, taking into account such factors as the length of the identified conductor, the frequency of the acoustic signal, the conductor cross-section, the speed of sound waves in conductive cores and insulating materials. The article presents practical experiments to test the applicability of the developed methodology. (Conclusions). To date, acoustic signals are not used to identify conductors, a method for calculating the sound pressure level in conductors has not been developed, taking into account various factors. Authors developed a methodology and performed theoretical calculations of the sound pressure level in the conductors. Based on the results of practical experiments with the use of a control and measuring device, the applicability of the proposed methodology was confirmed.