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Microcontroller-based interface circuit for inductive sensors

Author
Kokolanski, Z.; Jordana, J.; Gasulla, M.; Dimcev, V.; Reverter, F.
Type of activity
Presentation of work at congresses
Name of edition
Eurosensors 2014
Date of publication
2014
Presentation's date
2014-09
Book of congress proceedings
Procedia Engineering
First page
1251
Last page
1254
DOI
https://doi.org/10.1016/j.proeng.2014.11.411 Open in new window
URL
http://www.sciencedirect.com/science/article/pii/S1877705814025260 Open in new window
Abstract
This work proposes a fully-digital interface circuit for the measurement of inductive sensors using a low-cost microcontroller (µC) and without any intermediate active circuit. Apart from the µC and the sensor, the circuit just requires an external resistor and a reference inductance so that two RL circuits with a high-pass filter (HPF) topology are formed. The µC appropriately excites such RL circuits in order to measure the discharging time of the voltage across each inductance (i.e. sensin...
Keywords
Inductive sensor, microcontroller, sensor electronic interface
Group of research
e-CAT - Electronic Circuits and Transducers

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