| 摘要 |
FIELD: measurement technology.SUBSTANCE: device includes measurement bridge 1, linearising resistor 6, differential amplifier 7, reference voltage source 8, differential circuit 9, integrator 10, amplifier 11 and adder 12. Outputs of one diagonal of measurement bridge 1 are connected to power source UP, and outputs of the other diagonal are data outputs of simulator and are connected to inputs of differential amplifier 7. Reference voltage source 8 input is connected to power source UP of measurement bridge 1, and output of reference voltage source 8 is connected to second input of differential circuit 9. Output of adder 12 is connected to first output of linearising resistor 6, second output of which is connected to one of data outputs of the simulator.EFFECT: enhanced simulation accuracy for measurement bridge unbalance due to the use of multiplying D-A converter as reference voltage source, connected by reference voltage input to measurement bridge power source; possible simulation of frequency signals by installation of amplifier and adder to simulator circuit to form additional inertia-free channel of measurement bridge signal conversion.1 dwg |
