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1、Automatic Irrigation SystemWu TuoDepartment of Electronic Information Engineering in Kong Ming College of Hubei University of Arts and Sciences Xiangyang city, hubei province longzhong road 296.894706960.Abstract: Intelligent wide area of farmland water supply system based on the embedded system des
2、igned, when the detected water shortage of farmland information can start by automatic control relay water supply pump, and realizes the remote GPRS communication, can through the PC machine to understand the running status of the system and its control, to determine whether the soil information fro
3、m the bank to start water pump for farmland water supply automatic acquisition, which is in line with Chinas basic national conditions of the rural.This system has the advantages of simple operation, transformation of the system to look, can be designed into the courtyard of automatic water supply s
4、ystem, greenhouse automatic water supply system and automatic water supply system etc. the garden, the expansibility of the system is relatively good, relatively broad prospects.Keywords: irrigation; automatic; temperature; humidity; sensor1 Introduction The world has realized the water becomes a ke
5、y issue for twenty-first Century of the sustainable development. China water resources have been in quite scarce degree, plus 90% of the countrys sewage untreated or treated not directly discharge standard. Water is the lifeline of agriculture, is a controlling factor of ecological environment, and
6、is a strategic economic resource, and therefore the use of groundwater extraction pumps to irrigate farmland, realize the rational utilization of water resources, the development of water-saving water, improve the ecological environment, is currently Chinas precision agriculture is the key.Using the
7、 method of irrigation water and energy saving is the general trend of development in todays world water supply technology. Intelligent water supply system in foreign developed countries promote faster development, technology is mature, advanced electronic technology, computer and control technology
8、is applied to the agricultural water supply, greatly improve the water use efficiency and productivity.2 Materials and Methods1.The working principle and hardware structure of the system1.1 The working principle of the system Single chip microcomputer system by multi sensors for humidity, temperatur
9、e, rainfall, pH, moisture evaporation (wind) more information and air temperature acquisition to achieve precise automatic irrigation for farmland and water control, whether the information by GPRS communication through Internet transmitted to the remote control center to realize remote monitoring,
10、and through some model of computer in the processing of information, making the water supply plan.1.2 system hardware structure The system consists of two subsystems, one of which is the control center: to form a control host and wireless sensor network node. The second is the remote control system:
11、 GPRS communication module, Internet network transmission and monitoring center computer.2. Irrigation automatic control system and its function2.1 Irrigation automatic control systemIn order to realize the automation of irrigation, there must be automatic irrigation controller, the apparatus consis
12、ts of soil moisture sensor, controller and an electromagnetic valve, according to soil and crop water requirement characteristics of the implementation of automatic irrigation, intelligent, precision irrigation technology is accompanied by computer technology, sensor technology of manufacturing, pla
13、stic industry technology improved and realized step by step.2.2 Intelligent irrigation control of the central computer system function: 1, automatic acquisition of various meteorological data, calculate and record the evapotranspirationET; 2, automatic recording, display, the running time of each ir
14、rigation storage station; automatic recording, displaying and storing sensor feedback data, in order to accumulate data, modify the program to modify the system etc.; 3, frequent irrigation function: will design a good watering time is divided into several periods, in order to provide adequate soil
15、infiltration time, reduce the slope or clay surface runoff loss.3 Results and discussion:Farmland water supply task is timely and proper water from the source to send to the farmland, meet the needs of crop growth. Water supply from natural state to be absorbed by crops and ultimately the formation
16、of yield can be attributed to the following three links:1, through the water, transport, water distribution system to guide the water to the field;2, and then to the irrigation of appropriate technology will be available for crop water into soil water absorption;3, the crop roots to absorb moisture
17、from the soil (including nutrients), through photosynthesis to radiant energy into chemical energy and finally the formation of dry matter (carbohydrate).Graph: circuit diagram at work4 Conclusion: Water supply from natural state to be absorbed by crops eventually form the three big links yield in t
18、he first two links can rely on a series of engineering technology and management measures to achieve. Water saving water yield goal should be to greatly improve the conversion efficiency of water and the output of the two segments. This paper is aimed at the first link and research design. If accord
19、ing to the actual situation of crop combined with drip irrigation, spraying, fertilization, pesticide technology reasonable use, our country agriculture prospects will be very optimistic.References:1 Wang Chao, Niu Wenquan irrigation forecasting research based on Zigbee for water saving irrigation, J,2012 12.2 Han Xiangbo. The application of configuration software and PLC in irrigation, J, Anhui Agricultural Sciences, 2010 21 period.第- 4 -页 共 6 页