Zjištění možnosti přenosu signálu vedením lidského těla

Abstract

Communication (HBC), utilizing human body tissue as the transmission medium for transmitting information, offers an innovative approach to data transmission in healthcare with minimal interference and reliable data connection. This work first examines bioelectrical processes in human body and the dielectric properties of human tissue. Furthermore, development and experiments in the area of galvanic HBC are described. Based on these findings, measurement chains are created for galvanic method. For the measurement purpose, pig tissue is used. The influence of the signal shape used and the electrode placement on communication is investigated. The work examines digital modulation techniques, their transmission speed for measured bandwidth and probability of error. From measured characteristics theoretical values of transmission speed, channel capacity and probability of error were calculated. Sinus signal received by electrodes with bigger placement spread has shown to be best for galvanic HBC. Among the examined digital modulation methods, frequency and phase modulation are offering the best data transmission parameters.