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Directly interfacing sensors that link sensors to micro-controllers without a signal conditioning circuit or an analogue-to-digital converter on the one side and energy harvesting systems on the other side are two key enabling technologies to create self-powered autonomous low-cost and low-maintenance sensor networks. In this reported work, both technologies are concurrently combined in such a way that the duty cycle of the pulsed power supply provided by the harvesting system itself yields in turn a temperature gradient sensor functionality. Originally conceived to power a low-power satellite beacon in a CubeSat project, it has found application, among other applications, in automatic air conditioning and heating systems aiming smart buildings.
CitationJove-Casulleras, R., Ramos, J., Corimanya, H., Camps, A., Alarcon, E., Amezaga, A., Bou , E. Temperature gradient sensor from pulsed power supply duty cycle in ultra-low-power energy harvesting system. "Electronics Letters", 22 Maig 2014, vol. 50, núm. 11, p. 826-828.
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