An adaptable interface between resistive sensors and microcontrollers

J. Revuelto; N. Medrano; B. Calvo; G. Zatorre; S. Celma

doi:10.1117/12.821638

28 May 2009 An adaptable interface between resistive sensors and microcontrollers

J. Revuelto, N. Medrano, B. Calvo, G. Zatorre, S. Celma

Proceedings Volume 7363, VLSI Circuits and Systems IV; 736315 (2009) https://doi.org/10.1117/12.821638
Event: SPIE Europe Microtechnologies for the New Millennium, 2009, Dresden, Germany

Abstract

The increasing application of sensor networks in many different fields causes a growing demand of low-cost passive sensors for monitoring physical variables as temperature, pressure or ambient humidity. These sensors need a conditioning circuit that allows an easy interface to a microcontroller, taking advantage of the full range of the sensor and reducing the microcontroller requirements. This paper presents a conditioning electronics designed to transform the output of low-cost resistive sensors to a frequency variable signal. The circuit is designed to use the full frequency range available, providing a good resolution. These quasi-digital signals are compatible to the logic levels of a standard low-power microcontroller, allowing its connection through a digital I/O port.

Citation Download Citation

J. Revuelto, N. Medrano, B. Calvo, G. Zatorre, and S. Celma "An adaptable interface between resistive sensors and microcontrollers", Proc. SPIE 7363, VLSI Circuits and Systems IV, 736315 (28 May 2009); https://doi.org/10.1117/12.821638

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