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Energy Harvesting Autonomous Sensor Systems by Yen Kheng Tan

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5

Hybrid Energy Harvesting System

Small-scale energy harvesting (EH) is a fast-growing research solution for powering a wireless sensor node [122, 123, 124 and 125]. However, EH itself has an inherent problem, which is the intermittent nature of the ambient energy source. It is possible that the operational reliability of the sensor node becomes compromised for prolonged unavailability of the ambient energy source. To augment the reliability of the sensor node, hybrid energy harvesting (HEH) is proposed in this chapter. For the HEH approach, a second ambient energy source, which is available in the same environment as the first energy source, is harvested to supplement the energy supply of the wireless sensor node. By doing so, more energy ...

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