• Title/Summary/Keyword: 온실제어

Search Result 212, Processing Time 0.026 seconds

A Study on System for Environmental Control in the Greenhouse using Internet (인터넷 기반의 온실 환경 제어 시스템에 관한 연구)

  • Kim, Dae-Eop;Park, Heung-Bok
    • The KIPS Transactions:PartD
    • /
    • v.8D no.4
    • /
    • pp.427-438
    • /
    • 2001
  • Recently, Environmental Control Devices of Green House for Protected Cultivation is composed of on/off-type Controller to control each device using timer in equipment of intensive Labor. In case of system, it is difficult to grasp condition of the greenhouse about errors when this system has defect of a hardware, and it operates in the remote place or at night. In this paper, we developed a system that capable of replacing the existing control method of on/off with display panel in the greenhouse, monitoring data aquisition and status in the greenhouse using client computer based on internet. Also this system can communicate with each local greenhouse, and send alarm message about error. And we constructed web server to manage efficient informations for environmental control and corps cultivation in the greenhouse.

  • PDF

A Embedded System Technology for Web based monitoring and control system (웹 기반의 감시제어시스템을 위한 임베디드 시스템 기술)

  • Park, Jong-Jin;Choi, Gyoo-Seok
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.9 no.1
    • /
    • pp.61-66
    • /
    • 2009
  • In this paper, an example of implementation of a embedded system technology for web based monitoring and control system is presented. For it interfaces with target board as an embedded system was developed, which was applied to specific green room model and verified of its usefulness. We implemented client/server socket programs using Java classes, and web based green room monitoring and control system as an user interface using JavaApplet. The implemented system did send information of green room model to client programs well on TCP/IP and control signals from client to green room model well too.

  • PDF

Automation System for the Greenhouse Control using Microprocessor (마이크로프로세서를 이용한 온실제어용 자동화 시스템)

  • Park, Hyoung-Keun;Kim, Sun-Youb;Kim, Seong-Gon
    • Proceedings of the KAIS Fall Conference
    • /
    • 2011.05a
    • /
    • pp.170-172
    • /
    • 2011
  • 기존의 인력을 동원하던 거의 대부분의 일들을 기계를 이용한 자동화 시스템으로 대체되고 있으며, 대체된 자동화 시스템은 작업의 효율성과 정확성으로 성능이 평가되고 있다. 본 논문에서는 농업분야에 응용하기 위한 온실제어 자동화 시스템을 개발하였다. 온실 온도제어 자동화 시스템은 보다 정확한 온도 제어와 습도 제어 기능을 가지고 있어야 하며, 오동작으로 농작물의 피해가 발생할 수 있으므로 오차의 최소화 기능도 필요하다. 이러한 모든 기능을 제어하기 위하여 AT89C51이 사용되었다.

  • PDF

Effects of the Open Level of the Side Window on the Control of the Temperature and Relative Humidity in the Fog Cooling Greenhouse (포그냉방 온실에서 측창개폐수준이 온습도 제어에 미치는 영향)

  • Kim, Young-Bok;Sung, Hyun-Soo;Yun, Nam-Kyu;Lee, Si-Young;Hwang, Seung-Jae;Kim, Hyeon-Tae;Lee, Jang-Pyung
    • Journal of agriculture & life science
    • /
    • v.45 no.6
    • /
    • pp.265-278
    • /
    • 2011
  • Effects of the open level of the side window were studied to control the temperature and relative humidity in the fog cooling greenhouse. The greenhouse was cooled by air atomizing spray nozzles of the air and water two-fluid process. The control process includes the measuring of environmental variables, setting and coding of the water balance equations and heat balance in greenhouse, calculating of the roof window open and spray water, and operating of the motor and pump. The target temperature and relative humidity were set at $28^{\circ}C$, 75%, respectively. The three modes of the side window open level were 0%, 50% and 100%. The average dry bulb temperatures of the inside air were 28.2, 27.2 and $26.3^{\circ}C$, respectively and their standard deviation was ranged from $0.4^{\circ}C$to $0.8^{\circ}C$. Also the relative humidity of the 0% mode was the best controlled one with the average of 76.3% and the standard deviation of 2.1%.

Development of Greenhouse Environment Monitoring & Control System Based on Web and Smart Phone (웹과 스마트폰 기반의 온실 환경 제어 시스템 개발)

  • Kim, D.E.;Lee, W.Y.;Kang, D.H.;Kang, I.C.;Hong, S.J.;Woo, Y.H.
    • Journal of Practical Agriculture & Fisheries Research
    • /
    • v.18 no.1
    • /
    • pp.101-112
    • /
    • 2016
  • Monitoring and control of the greenhouse environment play a decisive role in greenhouse crop production processes. The network system for greenhouse control was developed by using recent technologies of networking and wireless communications. In this paper, a remote monitoring and control system for greenhouse using a smartphone and a computer with internet has been developed. The system provides real-time remote greenhouse integrated management service which collects greenhouse environment information and controls greenhouse facilities based on sensors and equipments network. Graphical user interface for an integrated management system was designed with bases on the HMI and the experimental results showed that a sensor data and device status were collected by integrated management in real-time. Because the sensor data and device status can be displayed on a web page, transmitted using the server program to remote computer and mobile smartphone at the same time. The monitored-data can be downloaded, analyzed and saved from server program in real-time via mobile phone or internet at a remote place. Performance test results of the greenhouse control system has confirmed that all work successfully in accordance with the operating conditions. And data collections and display conditions, event actions, crops and equipments monitoring showed reliable results.

A Study on Environmental Control Monitoring in Green-house based on Client/Server (Client/Server에 기반한 온실 환경 모니터링에 관한 연구)

  • Seo, Sang-Jin;Kim, Dea-Up;Jung, Kwang-Ha;Um, Hyun-Seo;Park, Hung-Sig;Park, Hung-Bog
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2000.04a
    • /
    • pp.1196-1199
    • /
    • 2000
  • 기존의 환경 제어와 관련된 온실 환경 모니터링 기술은 온실의 비 표준화에 관련되어 정적 자원 모니터링에 국한되었다. 그리고 온실 환경 제어 시스템의 오작동으로 인한 재배 환경 파괴는 관리자로 하여금 치명적 피해를 입게 하였다. 본 연구에서는 비 표준화된 시스템 자원 관리와 환경 제어 모니터링을 수행하기 위해 객체화된 모니터링 제어 엔진을 설계 및 구현한다. 특히, 제어 시스템의 신뢰도 향상을 위해 반자동 제어 모드를 추가시켜 현재 온실 시스템의 운용에 대한 문제점을 보안했다. 추가적으로 사용자를 위한 화훼 정보 제공을 위한 DB 구축과 주문.판매 서비스를 통해 생산자와 소비자 사이의 투명한 유통망을 제공한다.

  • PDF

A Simulation of Temperature Control of Greenhouse with Hot-Water Heating System (온수난방시스템 온실의 온도제어 시뮬레이션)

  • 정태상;하종규;민영봉
    • Journal of Bio-Environment Control
    • /
    • v.8 no.3
    • /
    • pp.152-163
    • /
    • 1999
  • It is required to analyze the controlled response of air temperature in greenhouse according to control techniques for precise control. In this study, a mathematical model was established for air heating of greenhouse with hot-water heating system The parameters of the model were decided by regression analysis using reference data measured at the greenhouse being heated In the simulation for the digital control of air temperature in the greenhouse, the mathematical model to evaluate the control performances was used. Tested control methods were ON-OFF contpol, p control, rl control and PID control. The mathematical model represented by inside air temperature ( T$_{i}$), hot-water temperature (T$_{w}$) in heating pipe and outside air temperature (T$_{o}$) was expressed as a following discrete time equation ; T$_{i}$($textsc{k}$+1)= 0.851.T$_{i}$($textsc{k}$)+0.055.T$_{w}$($textsc{k}$)+0.094.T$_{o}$($textsc{k}$) Control simulations for various control methods showed the settling time, the overshoot and the steady state nor as follows; infinite time, 3.5$0^{\circ}C$, 3.5$0^{\circ}C$ for ON-OFF control : 30min 2.37$^{\circ}C$, 0.51$^{\circ}C$ for P control; 21min, 0.0$0^{\circ}C$, 0.23$^{\circ}C$ for PI control; 18min 0.0$0^{\circ}C$, 0.23$^{\circ}C$ for PID control, respectively. PI and PID controls appeared to be optimal control methods. There was no effect of differential gain on the heating process but much effect of integral gain on it.on it.

  • PDF

Establishment of Web-based Remote Monitoring System for Greenhouse Environment (웹기반의 온실환경 원격 모니터링 시스템 구축)

  • Kim, Kyeong-Og;Park, Kyoung-Wook;Kim, Jong-Chan;Jang, Moon-Suk;Kim, Eung-Kon
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.6 no.1
    • /
    • pp.77-83
    • /
    • 2011
  • This paper proposes a remote monitoring system, which manages crops' growth environment on a real-time basis by applying to greenhouses Green U-IT technology connecting environment control equipment such as temperature sensors, soil sensors, and moisture censors with computers. Information on greenhouses' environment is stored in a database, and by utilizing linear regression analysis and differential item functioning (DIF) analysis, optimal information on growth and environment is extracted from stored information in the form of items desired by users, and compared, analyzed, and monitored. By linking greenhouse environment control system with web environment and remotely controlling the system, users do not need to visit farmland and can remotely control greenhouses' environment on a real-time basis. Therefore farmhouses' production efficiency may be enhanced by continuously providing optimal growth environment for plants.

Real-Time Remote Greenhouse Monitoring and Control Using LabView (LabView를 이용한 실시간 온실 모니터링 및 원격 제어)

  • 서정희;박흥복
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.7 no.4
    • /
    • pp.779-787
    • /
    • 2003
  • Recently, a study on the development of remote monitoring and automation control system based on Web is spread widely. In this paper, we have expended the remote control method on the existing automation. And we proposed method to do real-time monitoring and remote control considering multimedia data processing, the expansion of TCP/IP using LabView graphical language. Also we applied the method in greenhouse environment control system. The application result was evaluated by very efficient thing to remotely monitor and control situation of greenhouse.

Implementation of Greenhouse Environmental Control Systems using Intelligence (지능을 이용한 온실 제어 시스템)

  • Yang, J.;Chung, C.D.;Hong, You-Sik;Ahn, B.I;Hwang, S.I.;Choi, Y.H.
    • Journal of the Institute of Electronics Engineers of Korea CI
    • /
    • v.49 no.2
    • /
    • pp.29-37
    • /
    • 2012
  • An experiment for an optimized automatic greenhouse environment in a flower farming greenhouse by building a ubiquitous sensor network with various sensors was conducted and the results were evaluated. And various culturing environmental information and data in the greenhouse were collected and analyzed. Then, the greenhouse was designed to maintain the best culturing environment on the basis of existing recommended optimized figures. By measuring the growth of the crops in the greenhouse, A system which controls facilities in the greenhouse to maintain the best culturing environment in accordance with change in the environment was analyzed.Computer simulation result proced that we discovered that controlling the facilities and the artificial light source increased production, enhanced quality, reduced labor and heating cost immensely. The experiment has proved that the u-flower farming system can maximize the income of farm families by sending warning messages to users of this system when weather suddenly changes so that users may cope with such changes and maintain the best culturing environment.