| 冬夏1，俞 龙1，2，杨海良1，孙道宗1，2.基于无线传感器网络的果园自动灌溉系统设计[J].广东农业科学,2015,42(19):137-143 |
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基于无线传感器网络的果园自动灌溉系统设计 |
| Design of automatic irrigation system for orchardbased on wireless sensor network |
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| DOI： |
| 中文关键词: 无线传感器网络 自动灌溉 太阳能充电 |
| 英文关键词: wireless sensor network automatic irrigation solar charging |
| 基金项目:广东省科技计划项目（2013B020314014）；
国家星火计划项目（2013GA780046）；广东省扶持农业机
械化发展专项资金 |
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| 摘要点击次数: 1264 |
| 全文下载次数: 618 |
| 中文摘要: |
| 针对现阶段果园无线节水灌溉系统成本高、传感器节点寿命有限、不能长期可靠工作等问题，介
绍了一种基于无线传感器网络节点的果园自动灌溉系统设计方案。该系统由主节点、传感器节点、水泵节点3
种节点组成，通过选取合适功率的太阳能电池板和太阳能电池充电芯片对锂电池进行充电，有效延长了传感
器节点寿命，实现系统连续稳定工作。在空旷地带，系统的有效通信距离208 m，节点额定电压5 V，工作时电
流125 mA，待机时电流1.6 mA，太阳能平均充电电流为20 mA。传感器节点在不充电的情况下，以每天唤醒
24 次，每次工作20 s 的频率，可连续工作约60 d。在连接太阳能电池板的情况下，可保证充电电量大于耗电电
量。在桃园的试验表明：传感器节点在采集土壤湿度信息时耗电量最大，连接太阳能电池板，电池电压在额定
电压附近小范围内波动，随机改变灌区内被测土壤湿度，系统可以按照设定的土壤湿度上限、下限，自主控制
水泵和电池阀工作状态，实现自动按需灌溉。 |
| 英文摘要: |
| To solve the problems like high cost of water-saving irrigation system，limited lifetime of wireless sensor
node，no long-term reliable operation and other issues for orchard irrigation，this paper introduced a orchard automatic
irrigation system design based on wireless sensor network node. The system consists of a master node，sensor node and
pump nodes. By selecting the appropriate power，solar panels and solar battery charging chip of lithium rechargeable
batteries，the system effectively extends the life of the sensor nodes to achieve continuous system stability. In an open
area，the effective communication distance is 208 m，node rated voltage is 5 V，operating current is 125 mA，standby
current is 1.6 mA，and solar average charging current is 20 mA. Without charge，for waking up 24 times a day with
frequency of 20 s，sensor nodes can work for about 60 d. In the case of connecting solar panels，rechargeable battery
ensures more than power consumption. Test in orchard shows that，the sensor nodes consume the maximum power for the
collection of soil moisture information. Under the condition of connected solar panel，battery voltage fluctuates within a
small range of rated voltage. Randomly changing the soil moisture of irrigation area，the system can autonomously control
the working status of pumps and valves battery according to the upper and lower limits of soil moisture，to meet the
automatic irrigation demand |
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