In order to achieve the water demand information accurately detect of the greenhouse crop and its precision irrigation automatic control, this article has designed a set of the irrigated control system based on ZigBee and fuzzy PID technology, which composed by the soil water potential sensor, CC2530F256 wireless microprocessor, IAR Embedded Workbench software development platform. And the time of Irrigation as the output .while the amount of soil water potential and crop growth cycle as the input. The article depended on Greenhouse-grown Jatropha to verify the object, the results show that the system can irrigate timely and appropriately according to the soil water potential and water demend of the different stages of Jatropha growth , which basically meet the design requirements. Therefore, the system has broad application prospects in the amount of greenhouse crop of fine control irrigation.
Farm field data information timely access is an important foundation of the modern precise management. A environmental information monitoring system was proposed based on Zigbee wireless sensor networks and field characteristics of environmental monitoring data information in this paper. The data acquisition by the sensor nodes of the monitoring regional, and a wireless network was constitute by multiple sensor node and network structure using a star topology, network coordinator is responsible for data collection and complete on-site data collection, processing, transmission and storage by RS232 interface connecting to a PC-side data management center. Practical application shows: the system has basically reached the design requirements provided some advantages with data transmission reliability and performance stability.
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