SYSTEM FOR SIGNAL TRANSMISSION FROM SENSORS WITH ANALOGUE OUTPUT VIA A TWO-WIRELESS LINE (OPTIONS) Russian patent published in 2018 - IPC G08C19/02 G01R19/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to devices for transmitting signals from analog sensors to a measuring system and can be used in stationary complexes of continuous monitoring of various physical quantities. System for transmitting signals from sensors with an analog output over a two-wire communication line contains a sensor with an analog output, control input node with controlled resistance, whose output is connected to the first end of one of the wires of the two-wire line, whose second ends are connected to the first and second contacts of the receiving unit, which contains a current collector resistor, as well as a source of constant voltage, whose negative bus is the common bus of the receiving node, and the first end of the second wire of the two-wire line is connected to the common terminal of the sensor with an analog output, whose power output is connected to the first end of the first wire of the two-wire line. Receiving unit comprises a current collector amplifier, whose inputs are connected to the terminals of the current collector resistor, and the output is the output of the signal.

EFFECT: technical result is increased noise immunity, reliability, reliability of functioning of elements having lower operating voltages.

21 cl, 10 dwg