SIGNAL SIMULATOR OF STRAIN GAUGE BRIDGE SENSORS Russian patent published in 2017 - IPC G01R17/00 

FIELD: measuring equipment.

SUBSTANCE: signal simulator of the bridge strain gauge sensors contains two switches and two resistor chains. The simulator is made according to the resistor bridge scheme, in which the arm resistances are equal to the nominal arm resistance of the strain gauge bridge sensor. Chains of the serially connected resistors are included between each pair of the resistors forming the bridge arms, which are supplied with the bridge power. Herewith one chain consists of m-1 resistors and has m-terminals, which are connected to the respective inputs of the first switch, the second chain consists of n-1 resistors and has n-terminals, which are connected to the respective inputs of the second switch. On the switch outputs, representing the measuring bridge diagonal, the number of the signal simulator steps is m×n; the number of the signal simulator steps is m in the presence of a single chain of m-1 resistors.

EFFECT: use of the present invention will improve the signal reproduction accuracy of the bridge resistor simulator and the physical quantity measurement accuracy, when using the test bench measuring system, remote from the calibration bench, on which the bridge strain gauge sensors of various physical quantities were calibrated using the test bench measuring system.

2 cl, 1 tbl, 1 dwg