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An Implementation of a Compact Smart Resistive Sensor Based on a Microcontroller with an Internal ADC

Abstrakt

In the paper a new implementation of a compact smart resistive sensor based on a microcontroller with internal ADCs is proposed and analysed. The solution is based only on a (already existing in the system) microcontroller and a simple sensor interface circuit working as a voltage divider consisting of a reference resistor and the resistive sensor connected in parallel with an interference suppression capacitor. The measurement method is based on stimulation of the sensor interface circuit by a single square voltage pulse and on sampling the resulting voltage on the resistive sensor. The proposed solution is illustrated by a complete application of the compact smart resistive sensor used for temperature measurements, based on a 8-bit microcontroller ATxmega32A4 with a 12-bit ADC and a Pt100 resistive sensor. The results of experimental research confirm that the compact smart resistive sensor has 1 oC resolution of temperature measurement for the whole range of changes of measured temperatures.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
Metrology and Measurement Systems nr 23, wydanie 2, strony 255 - 238,
ISSN: 0860-8229
Język:
angielski
Rok wydania:
2016
Opis bibliograficzny:
Czaja Z.: An Implementation of a Compact Smart Resistive Sensor Based on a Microcontroller with an Internal ADC// Metrology and Measurement Systems. -Vol. 23, iss. 2 (2016), s.255-238
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1515/mms-2016-0020
Weryfikacja:
Politechnika Gdańska

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