STRAIN GAGE SIGNAL SIMULATOR Russian patent published in 2025 - IPC G01R1/20 

FIELD: measuring.

SUBSTANCE: invention relates to measurement equipment and is intended to generate a given number of discrete increments of resistance relative to the nominal resistance of the simulated resistance strain gauge during metrological research, calibration and verification of high-speed measuring systems in automatic mode. Strain gage signal simulator comprising switches K1 and K2 and a shaper, which is designed to generate k₁ = m × n resistance increment steps and consists of a chain of series-connected resistors, one of which is a reference and has resistance R₀, one output of which is connected in series to the first output of the circuit of m-1 resistors, the resistance of each of which is equal to R₁, and the other output is connected to the first output of the circuit of n-1 resistors, the resistance of each of which is equal to R₂, m and n are odd numbers, wherein m can be greater than, equal to or less than n, last output of circuit of m-1 resistors is connected to first output of current source I, last output of circuit of n-1 resistors is connected to second output of current source I, outputs of the circuit of m-1 resistors are numbered from 1 to m and connected to inputs of the switch K1, outputs of the circuit of n-1 resistors are numbered from m+1 to m+n and connected to inputs of the switch K2, at the outputs of these switches, a voltage is generated, which is proportional to the resistance of the corresponding steps of the simulator, additionally, the strain gage signal simulator is configured to form k₂ = k₁ - a resistance increment steps, consists of resistors whose resistances are calculated from the following ratios: resistance value of resistors R₁ = (2×ΔR) / (k₂ - 1), reference resistor resistance value R₀ = R_n - ΔR - (a/2) × R₁, resistance value of resistors R₂ = m × R₁.

EFFECT: expansion of the strain gage signals simulator intended for the m × n steps of increment of resistance to provide formation of any number of steps of resistance increment with minimum total number of resistors of chains of m-1 resistors and n-1 resistors.

1 cl, 3 dwg