摘要
伴随全球性的能源危机,利用环境中的动态能量为无线传感器网络供电已经成为一种趋势。本文设计了一个基于BQ25504芯片的无线传感器节点自供电系统,该系统可以在330mV电压下启动,在工作时以最大功率跟踪方式采集低至80mV的温差能量,并能够动态地将能量通过能量缓冲器电路供给无线传感器节点使用。该系统有效地解决了基于微型温差电池的无线传感器节点自供电的问题。
Along with the global energy crisis, the usage of the dynamic energy of the environment to supply for wireless sensor networkshas become a trend. In this paper,we design a self-powered wireless sensor system based on the BQ25504 chip which can start at a volt-age of 330inV. It can capture the thermoelectric energy as low as 80rnV in maximum power point tracking mode and supply the dynamicenergy by the energy buffer circuit for wireless sensor nodes. The system effectively solves the power supply problem of self-poweredwireless sensor nodes based on tiny thermoelectric cell.
出处
《单片机与嵌入式系统应用》
2015年第3期18-21,共4页
Microcontrollers & Embedded Systems
基金
国家自然科学基金(No.61002029)
天津市自然科学基金(No.12JCQNJC00300)
教育部高等学校博士学科点专项科研基金(新教师类)(No.20110032120029)
天津大学自主创新项目
关键词
微型温差电池
能量缓冲
无线传感器系统
tiny thermoelectric cell
energy buffer
wireless sensor system
