Assessment of operational strategies for logical and optimal use of irrigation water in a downstream control system

2008 ◽  
pp. n/a-n/a ◽  
Author(s):  
A. R. Ghumman ◽  
M. Z. Khan ◽  
A. H. Khan ◽  
S. Munir
Keyword(s):  
Control System ◽  
Irrigation Water ◽  
Operational Strategies ◽  
Downstream Control

Irrigation Water Compensation Control System Based on Fuzzy Neural Network

2010 ◽  
Vol 108-111 ◽  
pp. 1386-1391
Author(s):  
Bo Wu ◽  
Bang Yan Ye ◽  
Chun Ling Wu ◽  
Cheng Zhong Zhang
Keyword(s):  
Neural Network ◽  
Control System ◽  
Irrigation Water ◽  
Fuzzy Neural Network ◽  
Experimental Result ◽  
Data Sampling ◽  
Water Control ◽  
Sampling Device ◽  
Fuzzy Neural ◽  
Water Compensation

This paper presents a Fuzzy Neural Network-based irrigation water control system for realizing accurate irrigation and water saving. The control system consists of a PC based server with a FNN-based control module, data sampling device, CAN bus communication network and remote irrigation units with sensors and controller. It can estimate irrigation water compensation according to the irrigation environments. By using Fuzzy Logic function and Fuzzy Neural Network, the controller module can fuse multi-source information that from Internet, sensors and other sources to make decision of irrigation water compensation on the control spot. Experimental result indicates that the compensation generated by FNN have higher precision than that by FL in this irrigation water control system.

scholarly journals Seasonal Irrigation Water Use Efficiency of Multi-Pot Box System

2001 ◽  
Vol 19 (1) ◽  
pp. 4-10 ◽  
Author(s):  
Suat Irmak ◽  
Dorota Z. Haman ◽  
Thomas H. Yeager ◽  
Claudia Larsen
Keyword(s):  
Control System ◽  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Plant Production ◽  
Irrigation Water Use Efficiency ◽  
Average Width ◽  
Irrigation Water Use ◽  
Use Efficiency ◽  
Seasonal Irrigation

Abstract A Multi-Pot Box System (MPBS) was tested during three growing seasons (Fall 1996, Fall 1997, and Fall 1998) for efficient use of irrigation and rainfall in container-grown landscape plant production. This system was compared to a conventional (control) system consisting of black containers spaced on 30 cm (1 ft) centers. Results showed that the MPBS was successful in improving efficient use of irrigation and rainfall for Viburnum odoratissimum, Ker-Gawl. (sweet viburnum). Significant portions of the total rainfall were captured during the Fall 1996 (71.3%) and Fall 1997 (54%) seasons and later supplied to plants increasing rainfall effectiveness and irrigation water use efficiency. Thus, the need for the irrigation applications was significantly reduced for the plants grown in the MPBS. The seasonal irrigation water use efficiency (IWUE) was significantly higher for the MPBS compared to the control system in all seasons, demonstrating that significantly less irrigation water was necessary to produce the same amount or greater plant dry mass (shoot and root). Growth indices [(average width + height) / 2)] and shoot and root dry weights were usually significantly higher in all seasons (with exception of the shoot dry weight in Fall 1997) for the plants grown in the MPBS. Results indicate a potential opportunity for using the MPBS for efficient irrigation and water savings for container-grown landscape plants

Water-Saving Monitoring System Design Based on LabView Simulation Platform

2015 ◽  
Vol 742 ◽  
pp. 582-585
Author(s):  
Juan Shu ◽  
Huan He Liao ◽  
Yuan Fang Xu
Keyword(s):  
Control System ◽  
Wireless Sensor Network ◽  
Monitoring System ◽  
Irrigation Water ◽  
Water Saving ◽  
Wireless Sensor ◽  
Simulation Platform ◽  
Crop Water ◽  
Virtual Design ◽  
Control Decision

A water-saving irrigation monitoring system was designed based on ZigBee wireless sensor network and LabView simulation platform. This system can solve the problems of unnecessary waste caused by the traditional artificial irrigation water and wiring complex of water-saving control system. The information of each node and data acquisition can be detected by the ZigBee wireless network monitoring system. Upper machine was designed by LabView virtual design platform, and all aspects of organic characteristics of the crop water requirement rule were combined through the fuzzy control decision support system. The date of the irrigation water would be directed, and achieved a fine management of water and scientific irrigation.

A controller for safe, convenient operation of LaB6 emitters on electron-beam instruments

1983 ◽  
Vol 41 ◽  
pp. 408-409
Author(s):  
W. J. Abramson ◽  
H. W. Estry ◽  
L. F. Allard
Keyword(s):  
Electron Beam ◽  
Control System ◽  
Thermal Shock ◽  
Appropriate Care ◽  
Electron Guns ◽  
Tungsten Filaments ◽  
Order Of Magnitude ◽  
Main Components

LaB6 emitters are becoming increasingly popular as direct replacements for tungsten filaments in the electron guns of modern electron-beam instruments. These emitters offer order of magnitude increases in beam brightness, and, with appropriate care in operation, a corresponding increase in source lifetime. They are, however, an order of magnitude more expensive, and may be easily damaged (by improper vacuum conditions and thermal shock) during saturation/desaturation operations. These operations typically require several minutes of an operator's attention, which becomes tedious and subject to error, particularly since the emitter must be cooled during sample exchanges to minimize damage from random vacuum excursions. We have designed a control system for LaBg emitters which relieves the operator of the necessity for manually controlling the emitter power, minimizes the danger of accidental improper operation, and makes the use of these emitters routine on multi-user instruments.Figure 1 is a block schematic of the main components of the control system, and Figure 2 shows the control box.

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