Abstract
In self-powered wireless sensor nodes, the efficiency for environmental energy harvesting, storage and management determines the lifetime and environmental adaptability of the sensor nodes. However, the method of improving output efficiency for traditional photovoltaic power generation is not suitable for a solar micro-power system due to the special requirements for its application. This paper presents a solar micro-power system designed for a solar self-powered wireless sensor node. The Maximum Power Point Tracking (MPPT) of solar cells and energy storage are realized by the hybrid energy storage structure and "window" control. Meanwhile, the mathematical model of energy harvesting, storing and management is formulated. In the novel system, the output conversion efficiency of solar cells is 12%.
| Original language | English |
|---|---|
| Article number | 71333Z |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 7133 |
| DOIs | |
| Publication status | Published - 2009 |
| Event | 5th International Symposium on Instrumentation Science and Technology - Shenyang, China Duration: 15 Sept 2009 → 18 Sept 2009 |
Keywords
- "Window" control
- Energy management
- Sensor node
- Solar Cell
