Transmission of measuring signals by an invariant property of communication lines with losses

Abstract

An invariant relationship between sets of load conductivity values and the respective values of the input currents of three wire communication lines is shown. This relationship does not depend on parameters of the lines and the accuracy of measuring devices. It allows transmitting signals of different physical sensors in the analog form for monitoring technical or natural objects.

Keywords

• communication line
• resistive sensor
• projective transformation
• cross ratio
• projective coordinates