设计并实现了一种可应用于无线传感器节点的复合能源系统样机,基于一种无线地磁交通流传感器,提出了本文的设计目标.选择太阳能、风能、应变能作为系统的能量源.根据这3种不同能量源的特性,对能量管理模块与能量储存模块进行了针对性设计,最后实现并测试了样机.实验结果表明,该样机可连续35 h在3.55 V电压下输出50mW的电能. Based on a wireless geomagnetic flow sensor, a design target of this paper is proposed.Selecting solar energy, wind energy and strain energy as the energy source of the system.According to these three aspects, a prototype of composite energy system that can be applied to wireless sensor nodes is designed and implemented. The energy management module and the energy storage module were designed and the prototype was finally implemented and tested.The experimental results show that the prototype can output 50mW of power at 3.55 V for 35 h continuously.