Abstract
ABSTRACTNode lifetime is the major challenge in the WSN design, which is directly related to the power consumption optimisation. Therefore, there is a necessity to investigate the node power profile so that the hardware designers will have a full picture about the system demand in an early stage of the design. Likewise, it helps the software designers in developing suitable energy-aware operating/routing protocols. This paper profiles an enhanced wireless sensor node called ‘WSN_3_HHEH’ power consumption powered by heterogeneous hybrid energy harvesting and equipped with an improved energy-aware Event-Priority-Driven Dissemination (EPDD) algorithm. The extensive real-world empirical power profiling measurements for each unit and node system level during active and sleep modes are presented, which it provides data on the wireless sensor node architectural design that is applicable for low-power and IoT applications. The results point out that within the WSN_3_HHEH the RF transceiver consumed the highest power of 24 mW, followed by the MCU with 7.5 mW, and the sensor module with 0.16 mW throughout the active period. During the sleeping period however, the MCU unit consumed a noticeable amount of power of 1.8 mW compared to the other sensor node units.
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