감성 조명장치의 소모 전력 절감을 위한 거리 측정 센서 기반 자동 조광 제어

신성훈,지상훈,정구민,이영대,배성한,Shin, Sung-Hun,Ji, Sang-Hoon,Jeong, Gu-Min,Lee, Young-Dae,Bae, Sung-Han 한국인터넷방송통신학회 2011 한국인터넷방송통신학회 논문지 Vol.11 No.6

본 논문에서는 감성조명의 소모전력 절감을 위한 거리 측정 센서 기반 자동 조광 제어 시스템을 제안하고 구현한다. 지속적인 색상변화를 표현해야 하는 감성 조명에서의 소비 전력 절감을 위하여 초음파 센서를 이용한 사용자와의 지속적인 거리 측정 및 이를 통한 PWM Dimming 제어를 수행한다. 조명장치는 마이크로 컨트롤러, LED Driver, 초음파 센서, 통신모듈 등으로 구성되며, 초음파 센서를 통해 측정된 거리 정보를 PWM 신호에 적용하여 실시간 밝기 제어를 수행한다. 기존 조명에서의 에너지 절감 기법을 감성조명에 적용하여 사용자 부재 시 불필요한 전력 소모를 최소화하는 능동형 조명 시스템을 구현한다. In this paper, we propose and implement the automated brightness control system using distance measuring sensor for reducing the power consumption of emotional lighting device. In order to reduce the power consumption of emotional lighting devices which express continuous color changes, the proposed device measures the distance continuously using ultrasonic sensor and by using this, it also performs PWM Dimming control. The lighting device is composed of micro controller, LED driver, ultrasonic sensor, communication module and so on. And the device performs the real time brightness control by adapting the measured distance information from ultrasonic sensor to PWM signals. From this experiment, we implement the active lighting system which minimizes unnecessary power consumption during user's absence by adapting existing energy reducing techniques.

전해 플라즈마 공정에 의해 AZ61A 합금에 형성된 산화물층의 특성에 미치는 OH^- 이온 농도의 영향

신성훈,정영승,구본흔,Shin, Seong Hun,Jeong, Young Seung,Rehman, Zeeshan Ur,Koo, Bon Heun 한국재료학회 2016 한국재료학회지 Vol.26 No.10

The effect of NaOH concentration on the properties of electrolytic plasma processing (EPP) coating formed on AZ61A Mg alloy is studied. Various types of EPP were employed on magnesium alloy AZ61A in a silicate bath with different concentrations of NaOH additive. Analysis of the composition and structure of the coating layers was carried out using an X-ray diffractometer (XRD) and a scanning electron microscope (SEM). The results showed that the oxide coating layer mainly consisted of MgO and $Mg_2SiO_4$; its porosity and thickness were highly dependent on the NaOH concentration. The Vickers hardness was over 900 HV for all the coatings. The oxide layer with 3 g/l of NaOH concentration exhibited the highest hardness value (1220 HV) and the lowest wear rate. Potentiodynamic testing of the 3 g/l NaOH concentration showed that this concentration had the highest corrosion resistance value of $2.04{\times}10^5{\Omega}cm^2$; however, the corrosion current density value of $5.80{\times}10^{-7}A/cm^2$ was the lowest such value.

핸드스캐닝 작업 방법에 따라 표준 모델 변형이 작업 정밀도에 미치는 정밀스캔에 관한 연구

신성훈(Seong-Hun Shin),장성호(Seong-Ho Jang),송준기(Joon-Ki Song),박광식(Kwang-Sig Park),이희성(Hee-Sung Lee) 한국산학기술학회 2018 한국산학기술학회논문지 Vol.19 No.4

본 연구는 치과분야에서 가장 큰 변화를 가져온 자동화 시스템의 보급화로 CAD/CAM이 사용됨에 따라, 로스트왁스 테크닉 기법 시스템을 대체 하고 있다. 이에 따라 인상재를 이용하여 구강을 채득하는 방법에서 구강스캐너를 활용하여 디지털 데이터로 치과보철물을 제작하고 있다. 그러나 구강스캐너의 스캐닝 방법에 따라 디지털 데이터의 정밀도가 많을 영향을 받고 있는 실정이다. 이에 본 연구의 목적은 구강스캐너 (Intraoral scanner)의 스캔 작업 방법에 따라 나타날 수 있는 왜곡현상 및 데이터 정확도를 평가하고자 한다. 데스탑 3D 모형 스캐너로 임상에서 사용된 석고 모델을 이용하여 표준 스캔 데이터를 만들고 동일한 모델을 사용하여 구강스캐너로 세 가지 다른 방법의(AS그룹, ZS그룹, OS그룹) 스캔 방법으로 구분하여 각 5회씩 그룹별로 스캔 데이터를 만들었고, ZS그룹에서 0.121mm, AS그룹 0.172mm, OS그룹 0.423mm 정확도를 보여 ZS그룹에서 가장 높은 정확도를 보였고, 최대오차 값은 ZS그룹 0.113mm, AS그룹 0.169mm, OS그룹 0.246으로 최대 오차는 ZS그룹이 가장 낮고 OS그룹이 가장 높게 측정되었다. 세 가지의 스캔 방법은 정확도나 재현성에 있어 확실한 차이를 보였으며 임상에서도 역시 의미 있는 결과로 보였다. This study was conducted to evaluate the distortion and data accuracy that may occur depending on the methods employed by the oral scanner (intra-oral scanner). Deseutap 3D models employing a plaster model used clinically as a scanner to create a standard scan data using the same model, separated by oral scanners in three different ways (AS Group, ZS group, OS group) How to scan each 5 times made the scan data for each group, it shows the 0.121 mm, 0.172 mm AS group, OS group 0.423 mm accuracy in ZS group. The ZS group showed the highest accuracy, with maximum error values of 0.113 mm, 0.169 mm and 0.246 being observed for the ZS, AS and OS group, respectively. The three scanning methods showed a clear differences in accuracy and reproducibility and also appeared to be meaningful in clinical practice

HDMI 멀티패스 기능을 지원하는 무선 HD급 고화질 영상 전송 시스템

신성훈(Sung-Hoon Shin),이효욱(Hyo-Uk Lee),김원(Won Kim) 한국정보기술학회 2013 Proceedings of KIIT Conference Vol.2013 No.5

본 연구는 다수의 영상 소스기기로부터 영상을 전송 받아 무선 영상 수신 장치에 전송 할 수 있도록 하는 HDMI 멀티 패스((Multi-path)를 지원하는 60㎓ 주파수 대역의 무선 영상 전송 시스템에 관한 것이다. HDMI 멀티 패스를 지원하는 60㎓ 주파수 대역의 무선 영상 전송 시스템은 60㎓ 주파수 대역을 이용하여 영상 데이터를 3Gbps의 속도로 무선 송출한다. 다수의 영상 소스기기와 각각 연결된 HDMI 포트중 어느 하나의 HDMI 포트와 연결된 영상 소스기기를 선택하여 통신을 설정한다, 또한, 통신이 설정된 영상 소스기기로부터 전송되는 영상 데이터를 6㎓ 주파수 대역의 무선 데이터로 변환하여 무선 송출하도록 함으로써, 영상 소스기기가 변경되어도 HDMI 케이블을 교체하여야 하는 불편함을 해소할 수 있게 된다. This study is about video transmission in 60㎓ interface of supporting HDMI multi-path which is transmitting from multiple video source devices to wireless video receiver. Wireless transmission system transmits video data at 3Gbps using 60㎓ frequency. It picks video source device connected to HDMI port to set up communication. It solves the inconvenience that might be occurred replace of HDMI cable by converting data to 60㎓ wireless data and transmitting from previously set video device.

기름회수를 위한 양친매성 자성 야누스 입자 대량생산

신성훈(S,H. Shin),이진기(J.K. Lee),조성수(S.S. Cho),송륜근(R.G. Song),김혜정(H.J. Kim) 한국가시화정보학회 2021 한국가시화정보학회 학술발표대회 논문집 Vol.2021 No.11

고속이동 물체에 대한 Line Scan Camera 영상 확보 목적의 초점 제어용 BLDC 모터 Profile 최적값 도출 연구

신성훈(Sung-Hoon Shin),김원(Won Kim) 한국정보기술학회 2013 Proceedings of KIIT Conference Vol.2013 No.5

라인스캔 카메라의 고속 이동 물체 촬영은 정확한 초점제어 프로파일 확보가 중요한데, 그 이유는 라인스캔 카메라의 고속 이동 물체 촬영은 초점 값이 물체의 크기와 형태에 따라 달라지기 때문이다. 이 연구에서는 우편 고속 분류 목적의 컨베이어 벨트시스템의 고속 이동 물체에 대한 레이저 거리측정 센서의 프로파일 값을 적절한 분석하여 최적의 모터제어 프로파일을 확보하는 것이 목표이다. 시스템은 기 구현된 컨베이어 벨트 시스템에 이동물체의 거리 값을 확보하기 위한 레이저 거리측정 센서를 구성 하였으며, 제안된 방법에 의해 확보된 프로파일의 유효성을 보이기 위하여 카메라 촬영에 대한 초점 제어를 진행하여, 2.5m/sec로 구동하는 바코드 인식용 컨베이어벨트의 물체에 대하여 98% 인식률을 확보하였다. Because the value of line-scan camera’s focus is changed by the size and shape of each object, it is important in photographing of high speed object with line-scan camera to obtain precise focus controlling profile. The aim of this study is ensuring optimal motor controlling profile by appropriate analysis of profile values through laser distance measuring sensor of conveyer belt system for rapid sorting of post packages. We constructed a system to achieve distance value of moving object by adding laser distance measuring sensor to previously materialized conveyer belt system. We controlled the focus of picturing camera to evaluate the profile by this proposed method and we obtained 98% recognition rate in objects on the conveyer belt with 2.5m/s of moving speed.

재사용 가능한 유류오염 방제물질로써 양친매성 자성 야누스 파티클의 미세유체 방식 대량생산

신성훈(Seonghun Shin),조성수(Seongsu Cho),송륜근(Ryungeun Song),김혜정(Hyejeong Kim),이진기(Jinkee Lee) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11

9세 아동의 보행 가변성 연구

신성훈(Shin, Sung-Hoon),이윤곤(Lee, Yun-Gon),정철민(Chung, Chul-Min) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.3

The purpose of this study is to determine how the control of covariates (height, weight, and walking speed) affects the changes in gait performance and gait variability in walking of 9-year-old children and young adults in their 20s. It is to understand how age affects actual gait performance and variability regardless of physical condition. Thirteen male 9-year-old children (9.43±0.19) and 13 young adults (21.69±1.60) living in the community, a total of 26 participants participated in this study. Participants wore 7D IMU sensors on both feet and walked for 6 minutes. From the data measured through the 6-minute walk, the gait performance variables was calculated as the average value of measured gait parameters. Gait variability was calculated by defining CV values of the measured gait parameters. As a result of performing ANCOVA controlled by a covariate in the gait performance comparison, there was no difference in performance between children and young adults, and there was a difference in gait variability in gait cycles (s), cadence (step/min), and stride length (m). This shows that children"s gait shows high variability due to lack of physical condition and gait speed as well as muscle strength and muscle nerve control ability compared to adults, and that gait regulation process is highly likely to be incomplete. This conclusion suggests that gait variability should be a factor in determining effective gait characteristics in children"s gait studies.

페록손공정에서 수온변화 및 NaOH 주입에 따른 지오스민 및 2-MIB 제거특성 연구

신성훈 ( Sung-hoon Shin ),조용철 ( Yong-chul Cho ),정종태 ( Jong-tai Jung ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.6

We examined the removal efficiency of Geosmin and 2-MIB by Peroxone Process according to water temperature and NaOH concentration. It was found that under the same condition of water temperature, injection of O₃ and H₂O₂ was higher efficient rather than injection of only O₃. In addition, It was also found that as mole ratio of H₂O₂/O₃ was getting higher, the removal efficiency was getting higher overall. But having to compare with 5℃ and 15℃ temperature, it was evident that the initial reaction rate was much slower at low temperature 5℃ with much lower efficiency. Based on a 7min(contact time) under 5℃, Geosmin and 2-MIB showed a mole ratio of 1.0 while showing a staggering 50% removal rate from 0.75 mole ratio under 15℃. For well-over 15 minutes, the removal rate went down from 50% to 27% and 20% in Geosmin and 2-MIB, respectively. As NaOH was injected to ramp up efficiency under low temperature, the processing efficiency for Geosmin and 2-MIB went up significantly. It is apparent that the efficiency was more pronounced when handled under increased NaOH injections in 5℃ than in 15℃. This directly translates into a conclusion that processing via NaOH was more efficient under low temperature 5℃ than 15℃. As in the case for pH, it was found that akaline substance reacted faster than acidic/neutral ones whereas the pace was far slower in pH 11 including not only reaction time but also processing efficiency.

수온 및 NaOH 농도변화에 따른 Peroxone/GAC 복합공정에서 지오스민 및 2-MIB 제거특성 연구

신성훈 ( Sung-hoon Shin ),정종태 ( Jong-tai Jung ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.5

Due to the rapid changes in the environment by climate change, algae in water supply becomes unpredictable so that there are concerns and worries about the occurrence of taste and order problems in tap water and in the recent winter, concentration of Geosmin was unusually detected up to 1,640 ng/L in Bukhan River. The treatment with Peroxone+GAC(granular activated carbon) process was implemented to reliably remove Geosmin and 2-MIB in a low temperature and a high concentration in this study and the result showed that the treatment efficiency of 2-MIB was observed relatively lower than Geosmin in terms of all ozone injection concentrations and H₂O₂/O₃ molar ratio in a low temperature condition, 5 ℃ and a high temperature condition, 25 ℃. In the GAC process, more than 99% of 2-MIB and Geosmin were removed under the condition of 25 ℃ which is a high water temperature and in case of the water temperature 5 ℃, both 2-MIB and Geosmin in the processed water were removed below the reference value of 20 ng/L. In the Peroxone process, the treatment of Geosmin and 2-MIB in a low temperature was very easy to process. In addition, overall, when the inflow concentration of Geosmin and 2-MIB increases, treatment efficiency showed a tendency to decrease. After adding NaOH, the treatment efficiency was very good in the GAC process which is a post-process and when a higher concentration of NaOH is applied, the treatment of residual ozone was decreased at both 5 ℃ and 15 ℃ of water temperatures.