• 산업기술연구
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• 제27권B호
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• pp.59-64
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• 2007

This study introduces an environmental noise evaluation procedure and results for a wind turbine (W/T) system. Test and evaluation are required by the international standard IEC 61400-11 in the aspect of environmental effect. Test and evaluation are performed on U-50 WT model which is first developed by the domestic W/T manufacturer. W/T test model is under operation in Daekwanryung wind test site. An integrated monitoring system in the test site is utilized for the evaluation. With the noise signal, meteorological data and W/T operational data are monitored in real time by the integrated monitoring system using LabVIEW. From the measured noise data, acoustic power level are estimated and compared with those of other similar size WT under the wind speeds required by international standard.

• 한국물환경학회지
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• 제23권5호
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• pp.697-704
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• 2007

This study proposes an integrated technique of Genetic Algorishim (GA) and Geographic Information System (GIS) for designing the water quality monitoring networks. To develop solution scheme of the integrated system, fitness functions are defined by the linear combination of five criteria which stand for the operation objectives of water quality monitoring stations. The criteria include representativeness of a river system, compliance with water quality standards, supervision of water use, surveillance of pollution sources and examination of water quality changes. The fitness level is obtained through calculations of the fitness functions and input data from GIS. To find the most appropriate parameters for the problems, the sensitivity analysis is performed for four parameters such as number of generations, population sizes, probability of crossover, and probability of mutation. Using the parameters resulted from the sensitivity analysis, the developed system proposed 110 water quality monitoring stations in the Nakdong River. This study demonstrates that the integrated technique of GA and GIS can be utilized as a decision supporting tool in optimized design for a water quality monitoring network.

• 생태와환경
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• 제41권4호
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• pp.423-430
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• 2008

As of September 2008,45 Automatic Water Quality Monitoring Systems (AWQMS) have been installed at different sites on the 4 rivers to detect early the presence of pollutants in water and to issue an alarm. We count the number of issuing alarms by AWQMS, however, we will find the alarm has hardly been issued. The reasons for the scarcity of alarm issue are extensively being examined. The National Institute of Environmental Research attributes wrong alarm criteria for each AWQMS station to one the reasons. In this study, a suggestion has been made to modify the current alarm criteria to correspond with characteristics of river water quality. The current system with only two criteria (low and high) should be replaced as four-criteria systems (low, medium, high, and severe) based on cases of other advanced countries and stream conditions of Korea. The highest value of data collected for 5 years was suggested as the alarm criteria for each parameter. Meanwhile the alarm criteria for VOCs, phenol and heavy metals were established as same as drinking water quality criteria.

• 한국지반신소재학회논문집
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• 제12권2호
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• pp.43-53
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• 2013

극한환경에서의 구조물 거동을 파악하기 위하여 남극 세종과학기지 부근의 기상환경을 분석(1988년-2007년 및 2010년)하고, 이에 적합한 상용화된 계측기를 선정하여 남극기지(생물해양연구동)에 설치하여 검토하였다. 남극 세종과학기지 기상환경분석결과, $-25.6^{\circ}C$ 이하의 온도 및 49.5m/s정도의 바람에도 견딜 수 있는 계측기를 설치해야 하며 설치위치도 지표면에서 225.0cm 이상이어야 한다. 또한, 남극에서 사용할 계측기 센서의 경우 온도, 폭설 및 강풍에 민감하고, 기상환경 이외에 남극의 동물이 침범할 수 있으므로 계측기 및 계측기용 데이터로거를 보호할 수 있는 시스템을 개발하여 적용하였다. 새롭게 개발된 보호시스템은 극한환경에서도 설치가 용이하고 경제적이다. 1년간의 계측결과를 바탕으로 보호시스템의 극지 적용가능성을 검토하였으며, 구조물 거동도 예측이 가능함을 확인하였다.

• 한국환경과학회지
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• 제14권10호
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• pp.929-935
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• 2005

The Monitoring System developed in this study was designed to help manage the recreational forests by gathering data on visitors' profiles and their opinions about recreational use and related facilities, This data could identify for changing situations in forest recreation demand as well as providing information on planning the management and use of the forest areas in advance. The standardized questionnaire had contained visitor profiles, activities, distribution of use by area, distribution us by time, duration of the visit, expenditure of visitors and information on visitor satisfaction and motivation. Also, the questionnaire had included the evaluations visitors' perception of facilities in order to identify the importance and performance of the various facilities, such as recreational and educational facilities, accomodations, directional signs as well as infrastructure. The monitoring system was developed in the object-oriented programming (OOP) environment. Microsoft Visual Basic 6,0 for the program language, Microsoft Access, and Excel program were used to develop the system. The monitoring system was composed of data input, database, and data analysis system, Once data were put into data input system, it automatically transferred to database, and it eventually produced the results of statistical analysis with one step procedure. This study was integrated with facilities and visitor monitoring system to identify the visitor impact at the recreational forests. In addition, this monitoring system would provide necessary and useful background information for management on recreational use of natural resources in a practical manner.

• 대한원격탐사학회지
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• 제30권5호
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• pp.641-650
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• 2014

최근 기후변화로 인하여 농작물 생산에 영향을 주는 기온, 강수량 등 환경요인의 변화가 급격하게 진행되고 있다. 이에 따른 농작물에 대한 생산량 예측은 전세계적인 식량 안보 문제의 해결, 국가차원의 농작물 수급정책 결정, 농가단위의 농가 소득 보전 등 지속가능한 농업경제 발전을 위한 중요한 요소가 되고 있다. 미국, 유럽, 중국, 캐나다, FAO, USDA, NASA 등 여러 국가들 및 기관들은 협력체계를 구축하여 넓게는 전세계 단위에서 국가단위까지 작물 모니터링 시스템을 운영하고 있다. 본 연구에서는 다양한 스케일로 운영되고 있는 국외 작황모니터링 시스템의 전반적인 현황을 파악하고 제공되고 있는 정보의 수준, 활용되고 있는 위성영상, 기후, 토양 습도 등 다양한 생물리변수의 활용 여부를 판단하여 향후 위성영상을 활용한 작황모니터링 시스템의 발전방향을 제시하고자 한다.

• 한국환경교육학회지:환경교육
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• 제10권2호
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• pp.311-324
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• 1997

General citizens can be a valuable resource for various types of environmental monitoring when they are well-trained and managed. Successful use of volunteer monitors depends on understanding that citizens are partners sharing expanded roles as the guardians of their local environment. Citizen volunteer monitoring programs are developed for three reasons: 1) to supplement environmental data collected by professional staffs in governmental agencies and scientific institutions; 2) to educate the public about local environmental problems; 3) to build a constituency of citizen to practice sound environmental management at a local level and build public support for environmental protection. All three goals can be achieved with a well-organized program which provides useful and credible data. Initial step in planning a successful volunteer monitoring project is to clearly identify the use to be made of the data. Technical advice from the identified potential user groups should be convened early in the planning stage to refine the program objectives and determine if volunteers can provide the level of expertise required. Data users must have confidence in the representativeness, consistency, and accuracy of data collected by volunteers. Effective quality assurance and quality control(QA/QC) procedures are essential to ensure the utility of environmental monitoring data. Volunteers must be trained in advance to carry out specific environmental monitoring tasks. Another components of successful volunteer monitoring programs is to give the volunteers praise and feedback as well as to encourage experienced volunteers to impose increased responsibilities. The increase of volunteer monitoring programs in Korea will play a major role in developing a participatory system in which the people are "empowered" to make decisions and make a difference.

• 지구물리와물리탐사
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• 제8권2호
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• pp.156-162
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• 2005

연안지역의 해수침투와 관련된 연구에서 전기전도도의 변화를 파악하는 것은 매우 중요한 문제 중에 하나이며, 특히 염/담수 영역에서의 전기전도도 모니터링은 양수로 인한 염수의 이동을 효과적으로 파악할 수 있기 때문에 양수 설계 최적화에 매우 유용하게 이용될 수 있다. 특히, 공내수의 수직적인 전기전도도 분포는 해수침투대의 특성에 따라서 변하기 때문에 여러 심도에 걸친 동시 모니터링이 필요하다. 본 연구에서는 상업용 모니터링 장비에 비하여 계측장비의 구성비용이 상대적으로 저렴하며 장기간 연속 모니터링 및 측정 변수들을 실시간으로 제어할 수 있는 원격 다채널 모니터링 시스템을 개발하였으며, 전남 영광지역의 해수침투 조사 시추공에 적용하여 양수에 따른 지하수의 전기전도도 변화 및 그 양상을 고찰하였다. 양수를 병행하면서 수행한 모니터링 결과, 일정 심도에서 전기전도도의 증가 또는 감소는 사질층 또는 암반의 균열을 따라 유동하는 지하수의 복합적인 영향임을 파악할 수 있었으며 이와 같은 결과는 양수 전$\cdot$후에 실시한 물리검층 결과와도 잘 일치하였다. 양수에 의한 공내수의 전기전도도 변화 특성을 심도에 따라서 실시간으로 측정할 수 있는 다채널 모니터링 시스템은 염분농도를 고려한 연안지역 지하수자원 확보에 유용하게 이용될 것으로 판단된다.

• 한국항행학회논문지
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• 제15권5호
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• pp.795-800
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• 2011

본 논문은 농축산물의 생장환경을 모니터링 하여 농축산물의 생산을 증대시킬 수 있도록 생장환경관리 모니터링 시스템을 설계, 구현에 관한 것이다. IT융합기술을 기반으로 한, 생장환경 모니터링 시스템은 4가지의 구성요소로 이루어져 있다. 환경 인자에 대한 센싱을 담당하는 센서노드, 센서와 통신을 담당하는 싱크노드, 관제 시스템과 연결기능을 수행하는 게이트웨이 및 관제 소프트웨어이다. 이를 통하여 환경인자인 온도 및 습도에 대한 관제과정을 수행하여 각각에 대해서 편차값 10%의 범위를 유지하는 최적의 생장 환경을 유지할 수 있었다.

• 센서학회지
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• 제17권3호
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• pp.168-177
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• 2008

An indoor environmental monitoring system using IEEE 802.15.4 based wireless sensor network is proposed to monitor the amount of pollutant entering to the room from outside and also the amount of pollutant that is generated in indoor by the building materials itself or human activities. Small-size, low-power wireless sensor node and low power electrochemical sensor board is designed to measure the condition of indoor environment in buildings such as home, offices, commercial premises and schools. In this paper, two query models, the broadcasting query protocol and flooding query protocol, were designed and programmed as a query-based routing protocol in wireless sensor network for an environment monitoring system. The flooding query routing protocol in environment monitoring is very effective as a power saving routing protocol and reliable data transmission between sensor nodes.