Unconventional Double-Current Circuit for Deflection and Temperature Simultaneous Measurement

  • Adam Idzkowski Bialystok University of Technology
  • Wojciech Walendziuk Bialystok University of Technology
  • Zygmunt Lech Warsza Research Institute of Automation and Measurements (PIAP)
Keywords: Error analysis, sensor systems, strain control, thermal analysis.


In this paper some interesting and novel features of a four-terminal (4T) network are presented. A single DC current source (J) is switched over and connected in turns to opposite arms of the four-element bridge circuit. This two-output circuit with two voltage outputs is called a double current circuit (2x1J). The output voltages are differently dependent on the arm resistance increments and their values are given in absolute and relative units. An original application with two sensors acting as strain gauges and RTD’s is presented. Signal conditioning formulas of 2D measurement of deflection and temperature of a cantilever beam are discussed in detail. Some results achieved with the use of the circuit are presented, as well.

DOI: http://dx.doi.org/10.5755/j01.eee.21.1.6834

Author Biography

Adam Idzkowski, Bialystok University of Technology
Chair of Theoretical Electrotechnics and Metrology, Adjunct
How to Cite
Idzkowski, A., Walendziuk, W., & Warsza, Z. L. (2015). Unconventional Double-Current Circuit for Deflection and Temperature Simultaneous Measurement. Elektronika Ir Elektrotechnika, 21(1), 23-27. https://doi.org/10.5755/j01.eee.21.1.6834