MULTICHANNEL STRAIN-MEASURING DEVICE Russian patent published in 2005 - IPC

FIELD: measuring engineering.

SUBSTANCE: device includes strain-measuring bridges, balancing devices, two commutators, analogue-digital converter, and coder. The balancing device of each channel is defined by a digital bridge. The impedances of the digital bridges and strain-measuring bridges are the same. The wires from the digital bridges and strain-measuring bridges are assembled in common cable. The commutators provide the input of the analogue-digital converter either with the signal from the strain-measuring bridge or with the sum of the signals from the strain-measuring bridge and balancing device. The bridge unbalance is converted into the digit code, the top digits of which are stored in the register, and is converted by the coder into the code for control of potentiometers of the digital bridge of the balancing device.

EFFECT: enhanced accuracy.

1 dwg