关键词: 无线传感器网络, 能量管理, 动态电压调度, 混合任务模型

Abstract: In order to prolong the lifetime of Wireless Sensor Network (WSN) by making economical use of energy, the authors put forward a more common algorithm which was known as the hybrid-task-model-based dynamic voltage scaling (H-DVS). Without restrictions of the relative duration, H-DVS algorithm was combined with Earliest Deadline First (EDF) algorithm and supported the hybrid-task model where the periodic tasks and sporadic tasks existed at the same time. According to the CPU's working load, H-DVS algorithm used the Frequency Modulation (FM) factor to regulate the real-time voltage and the frequency, and thereby it could support the real-time requirements while reducing energy consumption. The theoretical analysis and simulation results show that the method is feasible and effective.

Key words: Wireless Sensor Network (WSN), energy management, Dynamic Voltage Scaling (DVS), hybrid-task model