• Title/Summary/Keyword: Irrigation control

Search Result 629, Processing Time 0.033 seconds

Development of an Automatic Irrigation Control System in Protected Horticulture (시설원예에 있어서 물관리 지동화 시스템 개발)

  • 김경수;이기명;장익주
    • Journal of Bio-Environment Control
    • /
    • v.1 no.1
    • /
    • pp.61-71
    • /
    • 1992
  • This study is performed to develop an automatic irrigation control of system for effective water management in greenhouse. The automatic irrigation control system is composed of an IR-RED optical sensor in tensiometer and an One-chip micro controller. The following results are obtained : 1. A practical IR-RED optical sensor in tensiometer, which shows the starting point of irrigation, was developed. 2. The automatic irrigation system with the optical sensor and One-chip micro controller was developed and also designed to be able to combine with the control system for temperature, curtain opening, etc. 3. A multiple irrigation control system for several greenhouses were suggested. 4. The results of the system test with the driving program for automatic water management were excellent.

  • PDF

Operation peration and Management of Irrigation System-Concept and Technology (관개조직의 유지관리)

  • Kuroda, Masaharu
    • Proceedings of the Korean Society of Agricultural Engineers Conference
    • /
    • 1999.10c
    • /
    • pp.1-7
    • /
    • 1999
  • The control system is very important for the precise operation and suitable management of irrigation system. The Japanese Society of Irrigation, Drainage and Reclamation Engineering has a committee for investigating irrigation system control. The committee is trying to set up a manual for the control system. The concept of the control system in the preparing manual will be discussed in this report.

  • PDF

Irrigation System Based on Wireless Internet (무선 인터넷 기반의 급액관리 시스템)

  • Cho, Tae-Kyung
    • The Transactions of the Korean Institute of Electrical Engineers P
    • /
    • v.58 no.4
    • /
    • pp.422-426
    • /
    • 2009
  • The key point on water culture is the precise irrigation control according to the growth condition of growing plant. And most existing irrigation controllers are operated independently. So, the manager must be resided at hydroponic farm. In this paper, we design the irrigation control system based on wireless Internet that can be providing various control functions according to the growth condition of growing plant by using the cellular phone.

Smart Irrigation and Temperature Control for a Greenhouse System

  • Abinaya P;Swathika P
    • International Journal of Computer Science & Network Security
    • /
    • v.24 no.1
    • /
    • pp.151-155
    • /
    • 2024
  • This project is designed with the aim to facilitate the farmer or gardener to engage in green house systems and to improve agricultural technology. In order to reduce continuous monitoring of the soil parameters, excess time consumption for the farmers and excessive usage of water, "Smart irrigation and temperature control for a greenhouse system" has been developed. There are two different ways to irrigate the land namely traditional irrigation methods and modern irrigation methods.

A Fundamental Study on the Development of Irrigation Control Model in Soilless Culture of Cucumber (양액재배 오이의 급액제어모델 개발에 관한 기초연구)

  • 남상운;이남호;전우정;황한철;홍성구;허연정
    • Proceedings of the Korean Society of Agricultural Engineers Conference
    • /
    • 1998.10a
    • /
    • pp.224-229
    • /
    • 1998
  • This study was conducted to develop the simple and convenient irrigation control model which can maintain the appropriate rates of irrigation and drainage of nutrient solution according to the environmental conditions and growth stages in soilless culture of cucumber. In order to obtain fundamental data for development of the model, investigation of the actual state of soilless culture practices was carried out. Most irrigation systems of soilless culture were controlled by the time clock. Evapotranspiration of cucumber in soilless culture was investigated and correlations with environmental conditions were analyzed, and its prediction model was developed. A irrigation control model based on the time clock control and there were considered seasons, weather conditions, and growth stages was developed. Applicability of the model was tested by simulation. Drainage rates of irrigation system controlled by conventional time clock, integrated solar radiation, and the developed model were 61%, 20%, and 32%, respectively in cucumber perlite culture.

  • PDF

Optimal Flood Control Volume in the Irrigation Reservoir (관개저수지의 적정 홍수조절용량 설정방법)

  • 김태철;문종필;민진우;이훈구
    • Magazine of the Korean Society of Agricultural Engineers
    • /
    • v.40 no.2
    • /
    • pp.81-91
    • /
    • 1998
  • Water level of irrigation reservoir during the flood season could be kept to a certain level, so called, flood control level by releasing the flood inflow in advance in order to reduce the peak discharge of next coming flood and the damage of inundation. Concept of restriction intensity of water supply was introduced to evaluate the influence of flood control volume on the irrigation water supply. Restriction intensity can be calculated by multiplying the ratio of restriction to the days of restriction which are obtained from the operation rule curve and daily water level of irrigation reservoir and it has the dimension of % day. The method of restriction intensity was applied to the Yedang irrigation reservoir with the observed data of 30 years to review whether the present flood control volume is reasonable or not, and suggest the optimal flood control volume, if possible.

  • PDF

Effects of Irrigation Methods of Deep Sea Water on the Growth of Plug Seedlings (육묘 시 해양심층수의 관수 방법이 유묘의 생장에 미치는 영향)

  • Hong Sung-Yu;Yoon Byeong-Sung;Kang Won-Hee
    • Journal of Bio-Environment Control
    • /
    • v.15 no.2
    • /
    • pp.156-161
    • /
    • 2006
  • Overhead and sub-irrigation of deep sea water to tomato seedlings reduced the height as 50% and 58% than control plants. In the same treatment with surface sea water and NaCl water, the reduced rate in tomato seedlings' height were 49% and 56% in overhead irrigation, and 47% and 57% in sub-irrigation, respectively. Most effective method for the inhibition of the growth of the seedling was sub-irrigation method, which supplied water through the roots. No significant difference was observed on fresh weight of the upper part of tomato and cucumber seedlings, though the sub-irrigation reduced the fresh weight than the overhead irrigation. The reduced rate of fresh weight of seedlings by overhead irrigation was by 38% and sub-irrigation by 49% as compared to control. Similarly dry weight of upper and under soil parts of seedlings showed same trend of results thereof as fresh weight. This result can be traced to reduction of growth caused by salts in the water. In stem diameter of seedlings no significant difference was observed between two irrigation methods, even though both deep sea and NaCl water reduced stem diameter, as compared to control water. Overhead irrigation can be chosen by seedling producers because of better seedling quality by using TH ratio. Seedling compactness were not noticed in both the overhead and sub-irrigation. Sub-irrigation was found more effective method far the inhibition of height and compactness of tomato seedlings. Higher the concentration of NaCl, deep sea, and surface sea water, lesser the growth in height, fresh and dry weight, stem diameter, and leaf area was obtained. No significant difference was found, though sub-irrigation suppress the growth of seedlings.

A Study for the Automatic Control System in Greenhouse Using Microcomputer(IV) -Application of a Controller for the Automatic Control System- (마이크로컴퓨터에 의한 시설재배의 자동화에 관한 연구(IV) -자동화 시스템용 종합제어기의 응용-)

  • 김진현;김철수
    • Journal of Biosystems Engineering
    • /
    • v.20 no.3
    • /
    • pp.288-298
    • /
    • 1995
  • In greenhouse vegetable, the automatic control in cultivating environment has been projected as a national business ; especially a countermeasure against the settlement of UR negotiation. Because it makes possible to manage a large greenhouse with family-hands and to expect the betterment of quality and the increasement of harvest in crops. In the course of carrying the workout, however, there are many problems with the overall control system with computers as well as the individual systems for environment control because of hardware and software problems : especially the shortage of data for development of the system is most serious. Among the many problems for development of the automatic control system, the automations of irrigation, liquefied fertilizer and chemical solution, mixing and ventilation, etc and the development of the general automatic controller system for environment control in greenhouse are studied, which requires a lot of tabors. The results are summarized as follows ; 1. In moisture control by the soil moisture meter, the error was shown 10 % in the beginning irrigation point and 19 % in the stop irrigation point. 2. The supply of liquefied fertilizers with the irrigation system was excellent by setting the operating time and the mixing ratio. 3. The developed chemical spraying system was operated well, but not perfect in nozzle positions. 4. The cucumber was cultivated properly with the trickle irrigation system. 5. The developed controller for the automatic control system in greenhouse was remarkable in the part of hardware, but more researches are needed in the part of software.

  • PDF

Effect of pH in Irrigation Water on the Growth, Yield, and Grain Quality of Rice (관개용수 pH가 벼 생육, 수량, 미질에 미치는 영향(I))

  • Choi, Sun-Hwa;Kim, Ho-Il;An, Yeul;Huh, Yoo-Man
    • Proceedings of the Korean Society of Agricultural Engineers Conference
    • /
    • 2003.10a
    • /
    • pp.551-554
    • /
    • 2003
  • This study was carried out to investigate the effects of the pH of irrigation water on the growth, yield, and grain quality of rice. It acquire fundamental knowledges to set up irrigation water quality standards. The pot experiment was conducted with 5 treatments using irrigation waters with various pH values(control, 4, 6, 8, 10) and replicated four times with randomized block design. The results of this study showed that the uptake of N, P, and K, Ripened grain ratio and yield of rice tended to be reduced at the irrigation water of pH 4 and pH 10. P uptake, Ripened grain ratio and yield of rice at pH 4 water were significantly lower than the control. K uptake at pH 10 water was significantly lower than the control. Plant height, SPAD value and protein content of rice were not affected by the pH of irrigation water.

  • PDF

A Fundamental Study on the Development of Irrigation Control Model in Soilless Culture (양액재배 급액제어모델 개발에 관한 기초연구)

  • 남상운
    • Magazine of the Korean Society of Agricultural Engineers
    • /
    • v.41 no.2
    • /
    • pp.37-43
    • /
    • 1999
  • This study was conducted to develop the simple and convenient irrigation control model which can maintain the appropriate rates of irrigation and drainage of nutrient solution according to the enviornmental conditions and growth stages in soilless culture of cucumber. In order to obtain fundamental data for development of the model, investigation of the actual state of soilless culture practices was carried out. Most irrigatioin systems of soillness culture were controlled by the time colock. Evapotranspiration of cucumber in soilness culture was investigated and correlations with environmental conditions were analyzed , and its estimating model was developed. In order to develop the irrigation system which can control the amount of nutrient solution applied according to seasons, weather conditions, and growth stages, a irrigation clock control was developed. Applicability of the model was tested by simulation. Drainage rates of nutrient solution controlled by conventional time clock, integrated solar radiation, and the developed model were 61% , 20%, and 32% , respectively in cucumber perlite culture.

  • PDF