低功耗茶园环境监测节点设计

Design of Low-power Tea Garden Environment Monitoring Node

设计一种低功耗茶园环境监测节点,节点由微控制器模块、传感器模块、无线通信模块以及电源与太阳能充电模块组成。通过测试、分析节点的功耗,选择太阳能电池板功率为0.9W,锂电池容量为3000mA·h。对太阳能板充电以及节点数据采集周期选择进行测试,通过计算太阳能板的日充电容量和不同采集周期下的耗电量,结合实际测试,得到节点的数据采集周期需大于9.5min。经室外试验表明,在采集周期为10min、日均光照强度为10289lux时,太阳能电池板供电能使节点电池容量百分比基本维持在100%,可确保节点长期运行。

This paper designs a low-power tea garden environment monitoring node,which is composed of microcontroller module,sensor module,wireless communication module,power supply and solar charging module.The power consumption of the node is analyzed and tested.According to the power consumption of the node,the solar panel power is 0.9 W and the lithium battery capacity is 3 000 mA·h.The solar panel charging and node data collection cycle selection were tested respectively.By calculating the power consumption under different collection cycles and the daily charging capacity of the selected solar panel,combined with the actual test,it can be known that the node data collection cycle should be more than 9.5 min.Outdoor tests show that under the condition of 10 min collection cycle and 10 289 lux daily light intensity,the selected solar panels can basically maintain the percentage of battery capacity at the node at 100%,ensuring the long-term operation of the node.