DOI: https://doi.org/10.15588/1607-3274-2020-3-18

DEVELOPMENT AND RESEARCH OF A WIRELESS CONTROL SYSTEM FOR DEVICE “BIONIC EAR”

S. D. Arutyunov, N. B. Astashina, A. A. Bajdarov, V. A. Gurko, P. V. Mayorov, V. I. Freyman, A. A. Yuzhakov

Abstract


Context. The analysis of reliability indicators of information transfer between elements of wireless control systems – a control device implemented on a smartphone and a communication processor of the developed hearing aid is carried out. The object of research is the reliability indicators of the wireless control channel. The subject of the study is a theoretical and experimental analysis of the dependencies of reliability indicators of the designed wireless control system. 

Objective. The purpose of the work is to determine and study the analytical and experimental dependences of the reliability of transmission over the wireless control channel on the properties of the communication channel and settings of the system elements, forming recommendations for setting the parameters of the elements of the control system.

Methods. The elements of the reliability theory are used to determine the dependences of the bit and block error coefficients on the properties of the communication channel of the configuration of the elements of the control system. Analytical relationships are obtained to determine the reliability of transmission taking into account possible signal distortions. The dependences of reliability indicators on the parameters of the elements of the control system are investigated, illustrative examples are given. Simulated circuit models of a control system with selected Bluetooth wireless technology have been developed. Experimental studies have been carried out, on the basis of the data obtained, conclusions have been drawn and recommendations have been made on the choice of control system configurations in order to ensure specified reliability indicators at maximum efficiency (information transfer rate). 

Results. The dependences of reliability indicators (bit and block error coefficients) on the properties of the wireless information transmission channel and the parameters of the control system elements are obtained. Recommendations are given on the use of the results obtained when choosing the settings for the control element (smartphone) and the controlled element (communication processor of the hearing aid). To conduct experimental research, control system models in the MathWorks MatLab Simulink environment were created and tuned. 

Conclusions. The studies carried out in the work allow us to calculate and reasonably choose the parameters of the devices of the wireless control system for the given reliability indicators taking into account the error behavior model in the transmission channel and the settings of the associated equipment. This makes it possible to design and implement reliable control systems with specified reliability indicators and maximum information transfer rate. 


Keywords


Iinformation management systems, reliability, error rate, simulation, Bluetooth.

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Copyright (c) 2020 S. D. Arutyunov, N. B. Astashina, A. A. Bajdarov, V. A. Gurko, P. V. Mayorov, V. I. Freyman, A. A. Yuzhakov

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