基于太阳能技术的WSN节点多电源设计研究

Design of WSN node multi-power based on solar energy technology

对于WSN节点来说,电源模块是系统的重要组成部分。为了延长传感器节点寿命,提高工作效率,提出一种多电源供电系统,设置充电管理电路,低功耗DC-DC转换电路,电池保护电路,电源输入隔离电路以及储能电路。太阳电池板通过充电管理电路对锂电池充电,储能电路中的超级电容将多余太阳能储存起来并对系统进行充电,如此形成对WSN节点的多供电方式系统。通过实验证明,此设计系统中传感器节点抗干扰性能强,生存周期明显增加,非常适用于野外布置的无线传感器数据采集节点使用。

For WSN nodes,the power module is an important part of the system.In order to prolong the life of sensor nodes and improve working efficiency,a multi-power supply system was proposed,which set up charge management circuit,low power DC-DC conversion circuit,battery protection circuit,power input isolation circuit and energy storage circuit.The solar panels charged lithium batteries through charging management circuits.The supercapacitors in energy storage circuits stored excess solar energy and charged the system,thus forming a multipower supply system for WSN nodes.The experiments prove that the sensor nodes in this design system have strong anti-interference performance and obvious increase in life cycle,which is very suitable for the use of wireless sensor data acquisition nodes arranged in the field.