Professional paper

Reliability of Raspberry Pi 3 temperature sensor at low voltage

Davor Drinić ; Sveučilište Sjever
Danijel Koprivanac ; Veleučilište u Virovitici
Josip Jakić ; Veleučilište u Virovitici
Igor Petrović ; Parpar d.o.o.

Abstract

An important variable in performing precise measurements is the power source. This paper shows the influence of low power on the measuring accuracy of the operation of the Raspberry Pi device and its sensor, and whether the obtained measurement uncertainties can be used for the measurements' relevance. To achieve the measurement result, the sensor and the device have a connection to a source with a variable power source that can simulate the desired voltage drop on the converter or a decrease in battery capacity simulation. Raspberry Pi model 3 and Sunfounder DS18b20 heat sensor have been used in the practical part of the work. The operating speed of the Raspberry device has been decreased by reducing the voltage, and the sensor provides temperature reading curves under constant conditions. In the practical part of the work, measurements have been repeated at constant different temperatures. For the relevance of the measurement, the measurement cycle has been performed in a short time interval, which applies the measure of repeatability and reproducibility. The measured results have been presented in tables that we use for mathematical representation measurement uncertainties.

Keywords

Raspberry Pi4; sensors; low voltage; measurable insecurity

Hrčak ID:

318639

URI

https://hrcak.srce.hr/318639

Publication date:

28.6.2024.

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