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针对林区果园复杂环境无线传感器网络监测系统的供电问题,本文提出并设计了一种具有高度可靠性和稳定性的光伏和风力供电系统。该系统同时具有太阳能电池、微型风力发电机和外部直流输入接口,可以为超级电容器组和锂离子电池组充电。为了提高系统应对林区果园复杂天气的稳定可靠性,该系统增设了具有较高鲁棒性能的三级高灵敏保护电路。在对锂离子电池组保护方面,该系统采用无线微控制器CC1310,设计优选方案选择超级电容器组、锂离子电池组或外部直流电源为无线传感器网络监测节点供电。测试结果表明:该系统的5V和3.3V输出的稳定度分别高达99.6%和99.4%,能够为多数林区果园无线传感网络监测提供稳定的能源保障。
Aiming at the power supply problem of wireless sensor network monitoring system in complex orchard forest environment, this paper proposes and designs a kind of photovoltaic and wind power supply system with high reliability and stability. The system also has a solar cell, a miniature wind turbine and an external DC input for charging supercapacitor packs and Li-Ion battery packs. In order to improve the stability of the system in coping with complex orchards in the forest orchard, the system has added a three-level highly sensitive protection circuit with higher robustness. In the protection of lithium-ion battery packs, the system uses the wireless microcontroller CC1310 to design a preferred solution to select the supercapacitor bank, Li-ion battery pack or external DC power supply for the wireless sensor network monitoring node. The test results show that the stability of the 5V and 3.3V output of the system is up to 99.6% and 99.4%, respectively, which can provide a stable energy guarantee for the monitoring of most orchard wireless sensor networks.