Journal
MEASUREMENT SCIENCE AND TECHNOLOGY
Volume 32, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6501/ac00e8
Keywords
embedded system; gas meter; hall-effect sensor; magnetic sensor; microcontroller; reed switch
Funding
- Secretariat of University and Research of the Ministry of Business and Knowledge of the Government of Catalonia
- Spanish Ministry of Economy and Competitiveness
- European Regional Development Fund [TEC2016-76991-P]
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This article presents a measurement system controlled by an MCU for electronic reading of a mechanical gas meter, utilizing dual magnetic sensing through reed switches and Hall-effect sensors for accuracy and reliability. The prototype has been tested under various conditions to confirm its robustness and effectiveness.
This article proposes a measurement system controlled by a microcontroller unit (MCU) for the electronic reading of a mechanical gas meter. The measurement relies on dual magnetic sensing: (a) low-cost low-power primary sensing based on reed switches connected to the digital inputs of the MCU and (b) secondary sensing based on Hall-effect sensors connected to the analogue inputs of the MCU. In addition, both sensing strategies have an active and a passive element to achieve an output that is insensitive to external interfering magnets. A prototype has been implemented and characterized under different test conditions to confirm its reliability.
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