Research Institute for Integrated Management of Coastal Areas, Universitat Politècnica Valencia, EPSG, C.Paranimf, 1, Gandía, Spain.
Sensors (Basel). 2011;11(1):329-40. doi: 10.3390/s110100329. Epub 2010 Dec 30.
The design of a fully autonomous and wireless actuator node ("wEcoValve mote") based on the IEEE 802.15.4 standard is presented. The system allows remote control (open/close) of a 3-lead magnetic latch solenoid, commonly used in drip irrigation systems in applications such as agricultural areas, greenhouses, gardens, etc. The very low power consumption of the system in conjunction with the low power consumption of the valve, only when switching positions, allows the system to be solar powered, thus eliminating the need of wires and facilitating its deployment. By using supercapacitors recharged from a specifically designed solar power module, the need to replace batteries is also eliminated and the system is completely autonomous and maintenance free. The "wEcoValve mote" firmware is based on a synchronous protocol that allows a bidirectional communication with a latency optimized for real-time work, with a synchronization time between nodes of 4 s, thus achieving a power consumption average of 2.9 mW.
本文提出了一种基于 IEEE 802.15.4 标准的完全自主和无线执行器节点（“wEcoValve mote”）的设计。该系统允许远程控制（打开/关闭）三通磁锁螺线管，通常用于农业区域、温室、花园等滴灌系统中。该系统的超低功耗与仅在切换位置时才消耗功率的阀门相结合，允许系统采用太阳能供电，从而无需电线，便于部署。通过使用超级电容器从专门设计的太阳能充电模块充电，还可以消除更换电池的需求，并且系统完全自主，无需维护。“wEcoValve mote”固件基于同步协议，允许与实时工作优化的延迟进行双向通信，节点之间的同步时间为 4 s，从而实现平均 2.9 mW 的功耗。
