• 한국대기환경학회지
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• 제23권4호
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• pp.487-497
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• 2007

Increase of the greenhouse gases emissions during last century has led remarkable changes in our environment and climate system. Continuous monitoring of atmospheric constituents over the world is positively necessary to understand these changes around us. The concentrations of greenhouse gases ($CO_2,\;CH_4,\;N_2O,\;CFCs$) have been continuously measured at Global Climate Change Monitoring station in Gosan, Jeju since January, 2002. In this study, the variation characteristics of greenhouse gases as well as their annual, seasonal and diurnal trend using the data from January, 2002 to December, 2005 were analyzed. The raw data which was used in the analysis were validated with the methods recommended by WDCGG (World Data Center for Greenhouse Gases). The concentration of $CO_2$ was increasing continuously by 2.1 ppm/year, while $CH_4$ did not show any increasing or decreasing trend clearly for 4 years. The concentration of $N_2O$ was slightly increasing and CFCs were decreasing except CFC-12 which has longer lifetime compared with other CFCs. The variations of the greenhouse gases at Gosan were shown to be consistent with the global trend. But the concentration level of $CO_2$ in Korea was more or less higher than abroad.

• 원예과학기술지
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• 제34권6호
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• pp.860-870
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• 2016

환경요인에 대한 계속적인 모니터링은 농민들에게 온실에서 생육한 작물의 품질과 생산성을 개선할 수 있는 유용한 정보를 제공해 줄 것이다. 이 연구의 목적은 개방형의 저비용 microcontroller를 사용하여 온실 환경 계측 시스템을 개발하기 위함이다. 측정하기 위한 온실 환경 요인들은 대기 온도, 상대습도와 이산화탄소 등이다. 온도, 상대습도와 이산화탄소 농도 측정범위는 $40{\sim}120^{\circ}C$, 0~100%와 0-10,000 ppm이다. 온실 환경 자료를 실시간으로 모니터링하기 위해 $128{\times}64$ 그래픽 LCD을 사용하였다. 컴퓨터와 통신하기 위해 USB 인터페이스를 구성한 아두이노 Uno R3는 6개의 아날로그 입력과 14개의 디지털 입출력 핀으로 구성되어 있다. 온도/습도 센서는 디지털 핀 2번과 3번에 연결하였다. 이산화탄소 센서는 디지털 핀 12번과 13번에 연결하였다. LCD는 디지털 1번(TX)에 연결하였다. 스케치는 아두이노 프로그램 (IDE)로 프로그래밍하였다. 아두이노보드, 센서 및 액세서리 등을 포함한 측정 시스템은 저비용(총 244$)으로 개발되었다. 벤로형 온실에서 환경 요인들은 문제 없이 잘 측정되었다. 우리는 개방형 소프트웨어를 사용한 저비용 microcontroller가 우리 나라의 대부분의 면적을 차지하는 비닐 온실의 대기 환경을 측정하기 위해서 유용하게 사용되리라 예상할 수 있었다.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2001년도 동계 학술대회 논문집
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• pp.137-142
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• 2001

• 한국정보통신학회논문지
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• 제12권12호
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• pp.2315-2322
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• 2008

온실을 통해 시설원예작물을 재배하는 대다수의 농업인들은 병해충의 예측, 진단 및 방제에 큰 관심을 가지고 있으며, 특히 농가에서는 병해충 관리 문제가 가장 큰 문제로 대두되고 있다. 이를 위해 본 논문에서는 시설원예작물에 발생하는 병해충에 관한 정보를 데이터베이스로 구축하고 이를 토대로 농가단위에서 병해충을 손쉽고 정확하게 예측 및 관리할 수 있는 모바일 사용자를 위한 PDA 기반의 병해충 관리 시스템을 제안한다. 본 시스템에서는 모바일 기기를 기반으로 하기 때문에 온실에 직접 방문하지 않고 이동 중에도 온실 내의 작물의 다양한 정보를 쉽게 얻을 수 있어 적은 인력으로 효율적인 관리가 가능하다. 시스템의 수행성을 검증하게 위해 실제 온실을 축소한 형태의 가상 온실 모형을 제작한 후, 각 환경 센서의 시스템 구성 요소를 구현하여 PDA를 통해 온실의 상태를 손쉽게 확인 할 수가 있었고, 효율적인 병해충 예측 및 관리가 가능한 수행 결과를 보였다.

• International Journal of Computer Science & Network Security
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• 제24권1호
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• pp.151-155
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• 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.

• 한국농공학회논문집
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• 제51권5호
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• pp.101-106
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• 2009

The previous study developed the Filter-Disinfection-Adsorption (FDA) system to provide clean irrigation water for greenhouse cultivation as well as convenience water to farmers. In this study, the field examination was undertaken to assess performance of the FDA system. The field application was made in the suburb of Daegu, one of the large city in Korea. The study area located near by down-stream of Gum-Ho river is suffering low irrigation water quality problems with no water supply service facilities. Four water quality parameters including Suspended Solid (SS), Biological Oxygen Demand (BOD), coliform, and turbidity were selected to test the purification performance of FDA system. Also in order to improve the system, this study investigated the defects of using the FDA system through field monitoring. As results, it was found that this system can be used to supply good quality of irrigation water for greenhouse cultivation and also provide convenience water to farmers in the field areas of no water supply services.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.III
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• pp.593-599
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• 2000

Accurate quantification of plant physiological properties is often necessary for optimal control of an automated greenhouse production system. Conventional crop growth monitoring systems are usually burdensome, inaccurate, and harmful to crops. A thermal image analysis system was used to accomplish rapid and accurate measurements of physiological-property changes of water-stressed crops. Thermal images were obtained from several species of plants that were placed in a growth chamber. Analyzing the images provided the pattern of temperature changes in a leaf and the amount of differences in the temperature of stressed plants and non-stressed plants.

• Journal of Biosystems Engineering
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• 제24권5호
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• pp.439-444
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• 1999

Automated greenhouse production systems often require crop growth monitoring involving accurate quantification of plant physiological properties. Conventional methods are usually burdensome, inaccurate, and harmful to crops. A thermal image analysis system can accomplish rapid and accurate measurements of physiological-property changes of stressed crops. In this research a thermal imaging system was used to measure the leaf-temperature changes of several crops according to water deficit. Thermal images were obtained from lettuce, cucumber, pepper, and chinese cabbage plants. Results showed that there were significant differences in the temperature of stressed plants and non-stressed plants. The temperature differences between these two group of plants were 0.7 to 3$^{\circ}C$ according to species.

• 전기학회논문지
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• 제65권10호
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• pp.1755-1760
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• 2016

Automation of greenhouses has proved to be extremely helpful in maximizing crop yields and minimizing labor costs. The optimum conditions for cultivating plants are regularly maintained by the use of programmed sensors and actuators with constant monitoring of the system. In this paper, we have designed a prototype of a smart greenhouse using Arduino microcontroller, simple yet improved in feedbacks and algorithms. Only three important microclimatic parameters namely moisture level, temperature and light are taken into consideration for the design of the system. Signals acquired from the sensors are first isolated and filtered to reduce noise before it is processed by Arduino. With the help of LabVIEW program, Time domain analysis and Fast Fourier Transform (FFT) of the acquired signals are done to analyze the waveform. Especially, for smoothing the outlying data digitally, Moving average algorithm is designed. With the implement of this algorithm, variations in the sensed data which could occur from rapidly changing environment or imprecise sensors, could be largely smoothed and stable output could be created. Also, actuators are controlled with constant feedbacks to ensure desired conditions are always met. Lastly, data is constantly acquired by the use of Data Acquisition Hardware and can be viewed through PC or Smart devices for monitoring purposes.

• 환경위생공학
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• 제8권2호
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• pp.25-48
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• 1993

International concern over the environmental pollution is ever increasing, and diversified countermeasures must be devised in Korea also. Global trend, damages, problems and countermeasures with respect to issues mentioned in the Rio Declaration, such as prevention of ozone layer destruction, reduction of migratory atmospheric pollution between neighboring countries, and prevention of global greenhouse effect, were discussed in this report. Conclusion of the report is summarized as follows : A. Measurement, Planning and Monitoring (1) Development and implementation of a global network for measurement and monitoring from the global aspects such factors as related to acid rain(Pioneer substances, pH, sulfate, nitrate), effect of global temperature(Air temperature, $CO_2$, $CH_4$, CFC, $N_2O$) and destruction of ozone layer($CFC_S$). (2) Establishment of network system via satellite monitoring movement of regional air mass, damage on the ozone layer and ground temperature distribution. B. Elucidation of Present State (1) Improvement and development of devices for carbon circulation capable of accurately forecasting input and output of carbon. (2) Developmental research on chemical reactions of greenhouse gas in the air. (3) Improvement and development of global circulation model(GCM) C. Impact Assessment Impact assessment on ecosystem, human body, agriculture, floodgate, land use, coastal ecology, industries, etc. D. Preventive Measures and Technology Development (1) Development and consumption of new energy (2) Development of new technology for removal of pioneer substances (3) Development of substitute matter for $CFC_S$ (4) Improvement of agriculture and forestry means to prevent the destruction of ozone layer and the greenhouse effect of the globe (5) Improvement of housing to prevent the destruction of ozone layer and the greenhouse effect of the globe (6) Development of new technology for probing underground water (7) Preservation of forest (8) Biomass 5. Policy Development (1) Development of strategy model (2) Development of long term forecast model (3) Development of penalty charge effect and expense evaluation methods (4) Feasibility study on regulations By establishing the above mentioned measures for environmentally sound and sustainable development to establish the right to live for humankind and to preserve the one and only earth.