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Circuit arrangement for measuring a mechanical deformation, in particular under the influence of a pressure
Circuit arrangement for measuring a mechanical deformation, in particular under the influence of a pressure
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机译:用于测量机械变形的电路装置,尤其是在压力影响下的机械变形
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摘要
A circuit arrangement for measuring a mechanical deformation includes a pressure sensor with compression-deformable resistors for generating an analog deformation-dependent signal and a circuit for evaluating the analog deformation-dependent signal. The evaluating circuit includes a summing amplifier and a temperature-dependent coupling resistor connected between the input of the summing amplifier and the pressure sensor. The coupling resistor has a temperature coefficient adjusted to compensate for the temperature characteristic of the measuring sensitivity of the analog deformation-dependent signal. A temperature sensor generates a temperature-dependent signal corresponding to a static temperature characteristic of the evaluating circuit. There is provided a circuit for applying the temperature-dependent signal to the input of the summing amplifier to combine it with the analog deformation-dependent signal. The summing amplifier generates at its output a temperature-compensated, deformation-dependent output signal.
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