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Cited by 11Sensor Technology and Measurement SystemsAnalog and Mixed-Signal Circuit DesignArduino and IoT Applications

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Simple Measurement Method for Resistive Sensors Based on ADCs of Microcontrollers

Czaja, Zbigniew·2024·IEEE Sensors Journal
DOI 10.1109/jsen.2023.3341214
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Abstract

A new, complete measurement method for resistance measurement of resistive sensors for systems based on microcontrollers equipped with analog-to-digital converters (ADCs) is proposed. The interface circuit consists of only four resistors, including a resistive sensor and a reference resistor, connected directly to the microcontroller pins. It is activated only during measurements, which significantly reduces power consumption. The measurement procedure consists of measuring three voltages via the ADC. Thanks to this, the measurement results of the resistance are independent of the supply and reference voltages, the ON-resistance of the microcontroller pin, and also the offset and gain errors of the ADC. The method is illustrated in the example of a system consisting of an Arduino Micro and a Pt1000. Experimental studies have shown that the relative systematic measurement error of the sensor resistance is less than 0.29%, and the relative random error is less than 0.56%. They result solely from the quantization error of the 10-bit ADC. An oversampling method has also been proposed. With 64 times oversampling, the above errors were reduced to 0.27% and 0.11%, respectively.

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Metadata

Authors
Czaja, Z.
Affiliations
Gdańsk University of Technology (PL)
Corresponding author
Czaja, Zbigniew
ORCID
Czaja, Zbigniew
Venue
IEEE Sensors Journal
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Published
2024-02-01
Volume
24
Issue
3
Pages
2996-3003
ISSN
  • 1530-437X (ISSN-L)
  • 1558-1748
  • 2379-9153
DOI
10.1109/jsen.2023.3341214
OpenAlex
W4389776325
Cited by
11
References
47
Citations by year
2026: 1 · 2025: 7 · 2024: 3
FWCI
1.22
Type
journal article
Language
en
Open access
closed
Licence
Locations
IEEE Sensors Journal (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Instrumentation › Sensor Technology and Measurement Systems
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Analog and Mixed-Signal Circuit Design
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Arduino and IoT Applications
Keywords
resistive sensors, resistance measurement, microcontroller, analog-to-digital converter, reference resistor, oversampling, quantization error, low-power measurement

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