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Using Automation Controller System and Simulation Program for Testing Closed Circuits of Mini-Sprinkler Irrigation System 被引量:2
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作者 Hani A. Mansour Hany M. Mehanna +1 位作者 Mohamed E. El-Hagarey Ahmehd S. Hassan 《Open Journal of Modelling and Simulation》 2013年第2期14-23,共10页
The field experiments were conducted at the experimental farm of Faculty of agricultural, southern Illinois University SIUC, USA. The project makes the irrigation automated. With the use of low cost sensors and the si... The field experiments were conducted at the experimental farm of Faculty of agricultural, southern Illinois University SIUC, USA. The project makes the irrigation automated. With the use of low cost sensors and the simple circuitry makes currently project a low cost product, which can be bought even by a poor farmer. This research work is best suited for places where water is scares and has to be used in limited quantity and this proposal is a model to modernize the agriculture industries at a mass scale with optimum expenditure. In the field of agricultural engineering, use of sensor method of irrigation operation is important and it is well known that closed circuits of Mini-sprinkler irrigation system are very economical and efficient. Closed circuits are considered one of the modifications of Mini-sprinkler irrigation system, and added advantages to Mini-sprinkler irrigation system because it can relieve low operating pressures problem at the end of the lateral lines. In the conventional closed circuits of Mini-sprinkler irrigation system, the farmer has to keep watch on irrigation timetable, which is different for different crops. Using this system, one can save manpower, water to improve production and ultimately profit. The data could be summarized in following: Irrigation methods under study when using lateral length 60 mcould be ranked in the following ascending order according the values of the predicted and measured head losses CM1M-SIS CM2M-SIS.The correlation (Corr.) coefficients were used to compare the predicted and measured head losses along the lateral lines of all the closed circuits designs. Generally, the values of correlation analysis were (>0.90) were obtained with 0% field slope60 mlength (experimental conditions) for all closed circuits.The interaction between irrigation methods: at the start there are significant differences between CM2M-SIS and CM1M-SIS. 展开更多
关键词 Automation Controller Simulation Program mini-sprinkler IRRIGATION LATERAL CLOSED CIRCUITS
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微喷灌正方形布置时喷头组合间距的确定 被引量:1
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作者 李茂稳 《喷灌技术》 北大核心 1993年第3期6-8,64,共3页
本文根据微喷灌系统全湿润喷洒灌溉的试验数据和生产考核,分析了微喷灌为正方形布置时,在相应的组合间距下,达到的均匀度指标。SWP-J,SWP-2折射式微喷头正方形布置时,建议其组合间距a×b采用0.7~0.8R,DLXD1.5离心式微喷头组合间距a... 本文根据微喷灌系统全湿润喷洒灌溉的试验数据和生产考核,分析了微喷灌为正方形布置时,在相应的组合间距下,达到的均匀度指标。SWP-J,SWP-2折射式微喷头正方形布置时,建议其组合间距a×b采用0.7~0.8R,DLXD1.5离心式微喷头组合间距a×b=0.8~0.9R(风速在0~3.8m/s范围),此时喷洒均匀系数不低于0.85。 展开更多
关键词 喷灌 喷头 组合间距
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DLX离心式微喷头
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作者 胡伟林 聂建中 高计生 《喷灌技术》 北大核心 1992年第1期21-25,64,共5页
DLX离心式微喷头是一种没有旋转部件,全圆喷洒的微喷头。它的水力学现象比较复杂,在确定微喷头导流芯、喷嘴等部件尺寸时,主要采用试验的方法,即先按将设计成的多种试样进行对比试验,选优者制模注塑成形微喷头。
关键词 离心式 微喷头 结构设计 水力特性
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