MEMS 기반 IMU볼의 시스템 구현

서배승,유준 제어로봇시스템학회 2014 제어로봇시스템학회 국내학술대회 논문집 Vol.2014 No.5

농촌지역 돌발재해 피해 경감을 위한 USN기반 통합예경보시스템(ANSIM)의 개발

배승종,배원길,배연정,김성필,김수진,서일환,서승원 한국농촌계획학회 2015 농촌계획 Vol.21 No.3

The objectives of this research have been focussed on 1) developing prediction techniques for the flash flood and landslide based on rainfall prediction data in agricultural area and 2) developing an integrated forecasting system for the abrupt disasters using USN based real-time disaster sensing techniques. This study contains following steps to achieve the objective; 1) selecting rainfall prediction data, 2) constructing prediction techniques for flash flood and landslide, 3) developing USN and communication network protocol for detecting the abrupt disaster suitable for rural area, & 4) developing mobile application and SMS based early warning service system for local resident and tourist. Local prediction model (LDAPS , UM1.5km) supported by Korean meteorological administration was used for the rainfall prediction by considering spatial and temporal resolution. NRCS TR-20 and infinite slope stability analysis model were used to predict flash flood and landslide. There are limitations in terms of communication distance and cost using Zigbee and CDMA which have been used for existing disaster sensors. Rural suitable sensor-network module for water level and tilting gauge and gateway based on proprietary RF network were developed by consideration of low-cost, low-power, and long-distance for communication suitable for rural condition. SMS & mobile application forecasting & alarming system for local resident and tourist was set up for minimizing damage on the critical regions for abrupt disaster. The developed H/W & S/W for integrated abrupt disaster forecasting & alarming system was verified by field application.

온수배관에 의한 온실 내부의 온도변화

윤용철,신익수,배승범,김현태,최진식,서원명 경상대학교 농업생명과학연구원 2012 농업생명과학연구 Vol.46 No.2

본 연구는 유가상승에 따른 온실의 경영비 절감과 적설지역의 적설재해를 경감시키기 위하여 온수배관을 이용한 난방효과 및 온실곡부의 온도 상승효과를 구명하고자 수행되었다. 전체적으로 실험구의 온도가 대비구 보다 약 2.0~6.0℃정도 높게 나타났다. 천창부직포를 개방한 경우, 최저온도가 약 3.0~12.0℃범위로 나타나 적극적인 난방을 하게 되면 적설피해도 어느 정도 예방할 수 있을 것으로 판단되었다. 온실 내부의 높이별 온도 차이는 미미한 것으로 나타났다. 재배작물에 따른 온실의 최대난방부하는 각각 약 37,000 kcal·h-1 및 41,700 kcal·h-1정도이었다. 실험기간동안 최저 외기온 -11.9~4.0℃ 범위에서 설정온도별 발열량은 95,000~322,000 kcal 정도로서 시간당 6,050~20,900 kcal·h-1정도의 범위에 있었고, 최대난방부하와 비교하면 약 15~56%정도의 난방에너지를 공급할 수 있을 것으로 나타났다. 그리고 실험기간동안 전체 발열량과 소비전력량은 각각 2,629,025 kcal 및 677.3 kWh이었다. 화석연료인 경유로 난방 할 경우, 실험기간동안 소요되는 소비량은 291L 정도이었고, 비용은 331,700 won인 것으로 나타났다. 전력사용에 대한 총비용은 24,400 won정도로서 경유 소비 비용의 7.5%정도로 나타났다. 또한 전체 소비전력량을 에너지로 환산하면 약 582,200 kcal이고, 이 에너지는 전체 발열량의 약 22%에 불과하였다. This study was performed to obtain a heat saving effect and enhance the efficiency of a greenhouse by using a hot water piping in order to minimize the operating costs of a greenhouse as oil prices continue to rise. This method also reduces the likelihood of accidents caused by snowdrifts in regions with heavy snowfall. In general, the experimental plot was 2.0~6.0℃ higher than the control plot. When the skylight felt was opened, the minimum temperature was in the range of 3.0~12.0℃. Therefore, we judged that damage caused by snowdrifts may be prevented partly by active heating. The temperature difference inside of the greenhouse by height was insignificant. The maximum heating load of the greenhouse according to crop was respectively about 37,000 kcal·h-1 and 41,700 kcal·h-1. During the experiment, the heat value of each designed temperature in the range of the minimum ambient temperature -11.9~4.0℃ was about 95,000~322,000 kcal and it was in the range of 6,050~20,900 kcal·h-1. If it is compared with the maximum heating load, it can be shown that about 15~56% of the heating energy can be supplied. The total heat value and the amount of power consumption were 2,629,025 kcal and 677.3 kWh respectively during the experiment. If it is heated with diesel, a fossil fuel, the consumption during the experiment was 291 L and the cost was 331,700won. Total cost of using electric power was about 24,400 won and it is shown that it is about 7.5% of the cost of diesel consumption. Also, if the total amount of power consumption is converted into energy, it is approximately 582,200 kcal and the energy was just about 22% of the total heat value.

농촌지역 돌발재해 피해 경감을 위한 USN기반 통합예경보시스템(ANSIM)의 개발

배승종,배원길,배연정,김성필,김수진,서일환,서승원 한국농촌계획학회 2015 농촌계획 Vol.21 No.3

The objectives of this research have been focussed on 1) developing prediction techniques for the flash flood and landslide based on rainfall prediction data in agricultural area and 2) developing an integrated forecasting system for the abrupt disasters using USN based real-time disaster sensing techniques. This study contains following steps to achieve the objective; 1) selecting rainfall prediction data, 2) constructing prediction techniques for flash flood and landslide, 3) developing USN and communication network protocol for detecting the abrupt disaster suitable for rural area, & 4) developing mobile application and SMS based early warning service system for local resident and tourist. Local prediction model (LDAPS , UM1.5km) supported by Korean meteorological administration was used for the rainfall prediction by considering spatial and temporal resolution. NRCS TR-20 and infinite slope stability analysis model were used to predict flash flood and landslide. There are limitations in terms of communication distance and cost using Zigbee and CDMA which have been used for existing disaster sensors. Rural suitable sensor-network module for water level and tilting gauge and gateway based on proprietary RF network were developed by consideration of low-cost, low-power, and long-distance for communication suitable for rural condition. SMS & mobile application forecasting & alarming system for local resident and tourist was set up for minimizing damage on the critical regions for abrupt disaster. The developed H/W & S/W for integrated abrupt disaster forecasting & alarming system was verified by field application.

축산관련차량 이동에 따른 도로의 에어로졸 발생량 분석

서일환 ( Il Hwan Seo ),이인복 ( In Bok Lee ),황현섭 ( Hyun Seob Hwang ),배연정 ( Yeon Jeong Bae ),배승종 ( Seung Jong Bae ),문운경 ( Oun Kyung Moon ) 한국농촌계획학회 2013 농촌계획 Vol.19 No.4

Most of livestock houses are concentrated in certain area with mass rearing system resulting in rapid spread of infectious diseases such as HPAI (highly pathogenic avian influenza). The livestock-related vehicles which frequently travel between farms could be a major factor for disease spread by means of transmission of airborne aerosol including pathogens. This study was focused on the quantitative measurement of aerosol concentration by field experiment while vehicles were passing through the road. The TSP (total suspended particle) and PM10 (particle matter) were measured using air sampler with teflon filter installed downward the road with consideration of weather forecast and the direction of road. And aerosol spectrometer and video recorders were also used to measure the real-time distribution of aerosol concentration by its size. The results showed that PM2.5 was not considerable for transmission of airborne aerosol from the livestock-related vehicle. The mass generated from the road during the vehicle movement was measured and calculated to 241.4 μg/㎥ by means of the difference between TSP and PM2.5. The dispersion distance was predicted by 79.6 m from the trend curve.

온수배관에 의한 온실 내부의 온도변화

윤용철,신익수,배승범,김현태,최진식,서원명 경상대학교 농업생명과학연구원 2012 농업생명과학연구 Vol.46 No.2

This study was performed to obtain a heat saving effect and enhance the efficiency of a greenhouse by using a hot water piping in order to minimize the operating costs of a greenhouse as oil prices continue to rise. This method also reduces the likelihood of accidents caused by snowdrifts in regions with heavy snowfall. In general, the experimental plot was 2.0~6.0℃ higher than the control plot. When the skylight felt was opened, the minimum temperature was in the range of 3.0~12.0℃. Therefore, we judged that damage caused by snowdrifts may be prevented partly by active heating. The temperature difference inside of the greenhouse by height was insignificant. The maximum heating load of the greenhouse according to crop was respectively about 37,000 kcal․h-1 and 41,700 kcal․h-1. During the experiment, the heat value of each designed temperature in the range of the minimum ambient temperature -11.9~4.0℃ was about 95,000~322,000 kcal and it was in the range of 6,050~20,900 kcal․h-1. If it is compared with the maximum heating load, it can be shown that about 15~56% of the heating energy can be supplied. The total heat value and the amount of power consumption were 2,629,025 kcal and 677.3 kWh respectively during the experiment. If it is heated with diesel, a fossil fuel, the consumption during the experiment was 291 L and the cost was 331,700won. Total cost of using electric power was about 24,400 won and it is shown that it is about 7.5% of the cost of diesel consumption. Also, if the total amount of power consumption is converted into energy, it is approximately 582,200 kcal and the energy was just about 22% of the total heat value. 본 연구는 유가상승에 따른 온실의 경영비 절감과 적설지역의 적설재해를 경감시키기 위하여 온수배관을 이용한 난방효과 및 온실곡부의 온도 상승효과를 구명하고자 수행되었다. 전체적으로 실험구의 온도가 대비구 보다 약 2.0~6.0℃정도 높게 나타났다. 천창부직포를 개방한 경우, 최저온도가 약 3.0~ 12.0℃범위로 나타나 적극적인 난방을 하게 되면 적설피해도 어느 정도 예방할 수 있을 것으로 판단되었다. 온실 내부의 높이별 온도 차이는 미미한 것으로 나타났다. 재배작물에 따른 온실의 최대난방부하는 각각 약 37,000 kcal․h-1 및 41,700 kcal․h-1정도이었다. 실험기간동안 최저 외기온 -11.9~4.0℃ 범위에서 설정온도별 발열량은 95,000~322,000 kcal 정도로서 시간당 6,050~20,900 kcal․h-1정도의 범위에 있었고, 최대난방부하와 비교하면 약 15~56%정도의 난방에너지를 공급할 수 있을 것으로 나타났다. 그리고 실험기간동안 전체 발열량과 소비전력량은 각각 2,629,025 kcal 및 677.3 kWh이었다. 화석연료인 경유로 난방 할 경우, 실험기간동안 소요되는 소비량은 291L 정도이었고, 비용은 331,700 won인 것으로 나타났다. 전력사용에 대한 총비용은 24,400 won정도로서 경유 소비 비용의 7.5%정도로 나타났다. 또한 전체 소비전력량을 에너지로 환산하면 약 582,200 kcal이고, 이 에너지는 전체 발열량의 약 22%에 불과하였다.

농업분야 온실가스 배출량 산정의 불확도 추정 및 평가

배연정 ( Yeon Joung Bae ),배승종 ( Seung Jong Bae ),서일환 ( Il Hwan Seo ),서교 ( Kyo Seo ),이정재 ( Jeong Jae Lee ),김건엽 ( Gun Yeob Kim ) 한국농촌계획학회 2013 농촌계획 Vol.19 No.4

Analysis and evaluation of uncertainty is adopting the advanced methodology among the methods for greenhouse gas emission assessment that was defined in GPS2000 (Good practice guideline 2000) and GPG-LULUCF (GPG Land Use, Land-Use Change and Forestry). In 2006 IPCC guideline, two approaches are suggested to explain the uncertainty for each section with a national net emission and a prediction value on uncertainty as follows; 1) Spread sheet calculation based on the error propagation algorithm that was simplified with some assumptions, and 2) Monte carlo simulation that can be utilized in general purposes. There are few researches on the agricultural field including greenhouse gas emission that is generated from livestock and cultivation lands due to lack of information for statistic data, emission coefficient, and complicated emission formula. The main objective of this study is to suggest an evaluation method for the uncertainty of greenhouse gas emission in agricultural field by means of intercomparison of the prediction value on uncertainties which were estimated by spread sheet calculation and monte carlo simulation. A statistic analysis for probability density function for uncertainty of emission rate was carried out by targeting livestock intestinal fermentation, excrements treatment, and direct/indirect emission from agricultural lands and rice cultivation. It was suggested to minimize uncertainty by means of extraction of emission coefficient according to each targeting section.

광섬유 MOPA시스템을 위한 고반복률 단펄스 반도체 씨앗빔 발생기 개발

신우진,유봉안,이영락,노영철,김재성,서배승,전세형 한국통신학회 2009 한국통신학회 기타 간행물 Vol.2009 No.12

LPG 액상 촉매 열분해 청록 수소 및 고체 탄소 생산

유일한(Ilhan Yoo),최승빈(Seung Bin Choi),서배승(Bae-Seung Seo),노용규(Yong-Gyu Noh) 한국에너지기후변화학회 2022 한국에너지기후변화학회 학술대회 Vol.2022 No.10

농업·농촌시설의 돌발홍수 위험잠재능 평가

김수진 ( Soo-jin Kim ),김성필 ( Seong-pil Kim ),배연정 ( Yeon-joung Bae ),배승종 ( Seung-jong Bae ),김학관 ( Hak-kwan Kim ),서일환 ( Il-hwan Seo ),배원길 ( Won-gil Bae ) 한국농공학회 2014 한국농공학회 학술대회초록집 Vol.2014 No.-

최근 국지적, 집중적 특성을 지닌 강우패턴의 변화로 인하여 돌발홍수 피해영향이 상대적으로 크고 빈번하게 발생하고 있다. 주로 소하천의 최상류 계곡에서 발생하는 돌발홍수는 과거에 비해 여가생활 및 여행의 빈도가 증가함에 따라 인명피해가 급증하고 있어 돌발홍수 발생 가능성이 있는 지역에서는 피해를 최소화할 수 있는 대책이 시급하다. 홍수방어측면에서 비구조적인 대책의 일환으로 과거의 홍수발생 원인과 현상을 종합하여 홍수위험을 정량적으로 평가할 수 있는 취약성 분석과 위험잠재능 평가가 다수 진행되어왔다. 다만, 국가하천이나 지방하천을 중심으로 연구가 이루어지고 있어 실질적으로 돌발홍수에 의한 피해가 빈번하게 발생하는 소하천이나 계곡의 경우 최근 이상기후 및 재해경향을 반영하기에는 한계가 있다. 특히 농업·농촌 시설의 경우 홍수피해가 빈발하여 매년 많은 피해가 발생함에도 불구하고 대응하기 위한 체계적인 대책이 마련되지 않아 즉각적인 대응은 기대하기 어려운 실정이다. 이에 본 연구에서는 특정 치수단위구역의 잠재적인 홍수피해 취약 정도를 나타내는 홍수피해잠재능 개념을 도입하여 수계 내 상대적인 홍수위험정도를 평가할 수 있는 돌발홍수 위험잠재능을 산정하고자 한다. 더불어 수문기상, 사회경제적인 요소를 포괄하여 홍수위험관리 측면에서 지역별 상대적인 우선순위를 유연하고 체계적으로 제시하고자 한다.