CONVERTER OF SIGNALS FROM SINGLE RESISTANCE STRAIN GAUGES (VERSIONS) Russian patent published in 2010 - IPC G01R17/02 

FIELD: measurement equipment.

SUBSTANCE: invention is related to electric measurement equipment, in particular to electrotensometry, and may be used to convert signals of remote single strain gauges with various nominal resistances in multipoint measurement systems. According to invention, converter comprises source of reference voltage, operational amplifier with insulated supply, operational amplifier related to common bus, set of reference resistors and switchboard for two directions and number of changeovers equal to number of reference resistors. Operational amplifiers with their inlets are connected to sign-alternating current terminals of converter. Switching contacts of switchboard are connected accordingly to non-inverse inlet and common outlet of operational amplifier with insulated supply, contacts of all switchboard changeovers are accordingly joined and connected to other outlets of reference resistors. Versions of converter design are suggested.

EFFECT: increased accuracy and stability of converter in its operation with remote strain gauges in multipoint measurement systems.

4 cl, 4 dwg