Gases emitted by domestic and industrial boilers significantly contribute to the overall pollution levels of urban environments. Among these gases, Carbon Monoxide (CO) represents a marker of the efficiency of the combustion processes, and the monitoring of its emissions, even if often neglected, is crucial to improve the energy efficiency and the environmental safety within a Smart City context. This paper aims at describing a real-time, remote system for the monitoring of CO emissions of domestic and industrial boilers, based on the use of a low power Long Range Wide Area Network (LoRaWAN) sensor node. In particular, the proposed solution is based on an ad-hoc frontend circuit acting as a power gating system for the rest of the sensor node, exploiting the output of the CO sensor as a trigger to activate the data acquisition and transmission module. Such a solution allows to notably increase the life time of the node, allowing its powering by means of rechargeable Li-Ion batteries. Tests were performed on a real boiler in order to demonstrate the validity of the proposed solution. Power consumption of the sensor node was experimentally measured: theoretical analysis demonstrated an ideal life time for the sensor node up to 2 years and half.
A LoRaWAN Carbon Monoxide Measurement System with Low-Power Sensor-Triggering for the Monitoring of Domestic and Industrial Boilers
Pozzebon A.;
2021
Abstract
Gases emitted by domestic and industrial boilers significantly contribute to the overall pollution levels of urban environments. Among these gases, Carbon Monoxide (CO) represents a marker of the efficiency of the combustion processes, and the monitoring of its emissions, even if often neglected, is crucial to improve the energy efficiency and the environmental safety within a Smart City context. This paper aims at describing a real-time, remote system for the monitoring of CO emissions of domestic and industrial boilers, based on the use of a low power Long Range Wide Area Network (LoRaWAN) sensor node. In particular, the proposed solution is based on an ad-hoc frontend circuit acting as a power gating system for the rest of the sensor node, exploiting the output of the CO sensor as a trigger to activate the data acquisition and transmission module. Such a solution allows to notably increase the life time of the node, allowing its powering by means of rechargeable Li-Ion batteries. Tests were performed on a real boiler in order to demonstrate the validity of the proposed solution. Power consumption of the sensor node was experimentally measured: theoretical analysis demonstrated an ideal life time for the sensor node up to 2 years and half.Pubblicazioni consigliate
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