FIELD: physics.
SUBSTANCE: measuring transducer consisting of n channels, each having two measurement circuits consisting of series-connected operational amplifier of the current source, instrumentation amplifier, main amplifier, analogue-to-digital converter, current-setting reference resistor, two series-connected strain sensors, computer bus connected to the central processing unit of the computer, and a control device. The transducer is also provided with a reference voltage source, a digital-to-analogue transducer of the current source, a filter, a digital-to-analogue converter of nominal resistance of the strain sensors, random-access memory, a digital signal processor and a contact sensor.
EFFECT: high sensitivity.
3 dwg
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