STRAIN-GAUGE TRANSDUCER Russian patent published in 2005 - IPC

FIELD: measuring engineering.

SUBSTANCE: strain-gauge transducer comprises the strain-gauge bridge, balancing device, amplifying adder, commutator, analogue-digital converter, storing register, and coder. The balancing unit is made of resistive matrix with keys. The resistors are combined into a bridge circuit and are secured to the unmovable base of the flexible member. The impedances of the strain-gauge bridge and the resistive matrix are the same. The wires from the stain-gauge bridge and the resistive matrix are combined into the common cable. The commutator provides the input of the analogue-digital converter either with the signal from the stain-gauge bridge or the sum of the signals from the stain-gauge bridge and the balancing device. The unbalance of the bridge is converted into the digital code whose top digits are converted in the coder into the code for control of the keys of the resistive matrix of the balancing device.

EFFECT: enhanced reliability.

1 dwg