Experimental analysis of a new strain-gage signal conditioner based on a constant-current method

P. Cappa, Z. Del Prete, F. Marinozzi

Research output: Contribution to journalArticlepeer-review

Abstract

A strain-gage signal-conditioning scheme, which appears to be innovative, has been proposed. It is based on a potentiometric circuit with twin constant-current supplies. From the experimental tests carried out on our prototype, the following have been highlighted: a satisfying sensitivity (≅ 1 μm m-1), a calibration curve that might be considered linear (non-linearity error less than 1 μm m-1), low values of zero-shift (<1 μm m-1) throughout 60 hour test, and, finally, a global temperature coefficient that can be considered negligible (0.1 μm m-1 °C-1).

Original languageEnglish
Pages (from-to)173-178
Number of pages6
JournalSensors and Actuators, A: Physical
Volume55
Issue number2-3
Publication statusPublished - Jul 31 1996

Keywords

  • Constant-current method
  • Signal conditioning
  • Strain gages

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Instrumentation

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