• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부 B
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• pp.540-542
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• 1998

The Position Sensitive Detector(PSD) is an useful device which can be used to measure the position of an incidence light in accuracy and in real-time. In this paper, 2-D PSD sensor is used to measure the 2-D position of moving object with light source. To get the position of light source from PSD sensor exactly, we propose two position computation methods ; the parameter calibration and neural network. Experimental data is presented that offer the comparision between two methods and demonstrates the effectiveness of proposed approach.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.755-770
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• 2006

1974. 8.15 SeoulMetro, beginning with the first electric railway established at six cities, so it is managing mass transportation of traffic. Especially, in case of seoul, It is managing that from one to eight lines, 286.9km, 265 stations have installed and now it is carrying about 5.5million of passengers everyday, and 2,000million passengers a year. So accident is increasing from the station every year. For this measure, SeoulMetro prepares safety fence for passengers crash but, as suicides or people who watch the accident took place, for at the bottom of passengers crash protection, PSD installing is needed. Even though, PSD is managing ATO section but, in controlling SeoulMetro, one to four lines sections are (ATS, ATC)section. Between as ATS, ATC section, ATO section, subway gate and PSD must have opened and crossed always at the time. And the interlock control corrosion protection gate, managing skills with installation, method, using in history, apply to 10rail cars one train sets, and maximum applying 224% sections of passengers congested that consideration is to be needed. So 2004, SeoulMetro improved technology and basic design of PSD at ATS section. Based on this, from 2005.4 to 2006.6, using subway 2lines per 12stations set the model installation(full type 11stations, half type 1station) After installing in case of success, it is going about to suggest that effective analysis and hereafter subject.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2004년도 제23회 추계학술대회 논문집
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• pp.121-125
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• 2004

액체 연료 로켓의 연료 공급 라인을 모사한 시스템에 대해, PSD가 시스템의 응답에 미치는 영향을 살펴보았다. 주관의 유량 변화에 대한 주관 압력 변화의 비(시스템 응답)를 PSD 내의 기체 체적을 변화시키며 살펴보았다. PSD 내에 기체가 지을 경우, 시스템의 공진 주파수가 작아짐을 확인하였다. 그리고 기체의 체적이 클수록 시스템 공진 주파수가 작아졌으나, 그 변화는 그리 크지 않았다. 또한 PSD 내 기체량이 많은 경우, 주관 내 압력 및 유량 변화의 진폭이 많이 줄어듦을 확인할 수 있었다.

• 한국대기환경학회지
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• 제28권1호
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• pp.59-67
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• 2012

Platform screen doors (PSD) installed at 289 stations in Seoul metropolitan subway from November 2005 to December 2009, are expected to prevent death from a fall and improve air quality. In this study, we systematically surveyed changes in radon concentrations before and after PSD installation in Seoul metropolitan subway stations. By solid-state nuclear track detectors (SSNTD), the radon concentrations before and after the PSD installation were measured at 54 stations of 6 lines from 2 to 7 reported to have relatively high radon concentrations. Mean radon concentrations at platforms were decreased by approximately 56% from 121.7 Bq/$m^3$ to 54.0 Bq/$m^3$. Before PSD installation, mean radon concentrations were in the decreasing order for subway lines 7, 5, 6, 3, 4 and 2. On the other hand, after PSD installation the order was changed to 5, 6, 7, 3, 4 and 2. According to a radon map of Seoul metropolitan subway, the number of platforms where radon concentration over was 74 Bq/$m^3$ decreased from 38 to 12 after PSD installation.

• 한국광학회지
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• 제4권2호
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• pp.157-161
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• 1993

PSD(Position Sensitive Detector)를 위치센서로 사용하여 광학적 자동촛점 장치를 구성하여 그 특성을 조사하였다. 본 연구는 광 리소그라피 장비인 KrF 엑사이머 레이저 스템퍼를 모델로 개발 하였다. 광원으로 780nm인 반도체 레이저를 사용하였으며, 시준기, 반사경, 렌즈 등을 사용한 광학계를 구성하여 위치신호(position error signal)를 측정 하였으며, 분해능은 $0.03{\mu}m$이었다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.1025-1026
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• 2008

This paper describes a monocular PSD-based motion capture sensor to employ with commercial video game systems such as Microsoft's XBOX and Sony's Playstation II. The system includes a PSD(Position Sensitive Detector) and active infrared (IR) LED markers that are placed on the object to be tracked. The micro-controller calculates the 3D position of the markers using only the measured intensity and the 2D position on the PSD. A series of experiments were performed to evaluate the performance of our prototype system. From the experimental results we see that the proposed system has the advantages of the compact size, the low cost, the easy installation, and the high frame rates to be suitable for high speed motion tracking in games.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 B
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• pp.833-836
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• 1995

The Position Sensitive Detector(PSD) is an useful which can be used to measurement the position of an incidence light in detail and in real-time. In this paper, light sources, to be predefinded positions, are used as landmarks and the 2-D PSD signals are used to compensate the position of a running mobile robot. To induce the position compensation algorithm, first, we inspect the error factor, make the error model, and evaluate the error covariance matrix between the real position and estimated position in dead reckoning system. Next we obtain an optimal position compensation algorithm to update the estimated position using extended Kalman filler by the relation of the external light position and it's PSD signal. Through the simulation of navigating a robot the effectiveness of the proposed method is confirmed.

• 한국터널지하공간학회 논문집
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• 제20권2호
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• pp.527-539
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• 2018

다수의 승객들이 이용하는 지하철은 안전과 공간의 쾌적한 환경관리가 필수적이며, 2003년 이후 기준 강화로 승강장 내에 스크린도어(PSD)를 반드시 설치해야 한다. 선행연구에 따르면 지하철 화재 시에 화재연기의 배연을 위해 배연설비의 설비용량 최적설계가 필요하다. 따라서 본 연구에서는 선행연구의 실험 결과를 바탕으로 3차원 수치해석기법을 이용하여 PSD가 설치된 승강장 내에서 화재발생 시 배연시스템 별로 CO가스와 Smoke의 유동을 분석하였다. 본 연구의 결과 비상시 상부 배연설비만 가동한 경우에는 CO 가스와 Smoke 농도는 653.8 ppm과 $768.4mg/m^3$로 피난 시 승객들의 위험이 큰 것으로 분석되었으며, 모든 배연설비를 가동하고 화재측 PSD만을 개방한 경우 CO 가스와 Smoke 농도 36.0 ppm 및 $26.2mg/m^3$를 보이며 화재연기의 전파범위가 줄어드는 것으로 분석되었다. 모든 배연설비를 가동하고 화재측 PSD를 미개방한 경우에는 화재연기 유입이 발생하지 않아서 대피환경에 있어 가장 효과적인 배연모드로 분석되었다.

• 한국철도학회논문집
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• 제10권1호
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• pp.57-66
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• 2007

1974. 8. 15 SeoulMetro, beginning with the first electric railway established at six cities, so it is managing mass transportation of traffic. Especially, in case of seoul, It is managing that from one to eight lines, 286.9km, 265 stations have installed and now it is carrying about 5.5million of passengers everyday, and 2,000million passengers a year. So accident is increasing from the station every year. For this measure, SeoulMetro prepares safety fence for passengers crash but, as suicides or people who watch the accident took place, for at the bottom of passengers crash protection, PSD installing is needed. Even though, PSD is managing ATO section but, in controlling SeoulMetro, one to four lines sections are (ATS, ATC)section. Between as ATS, ATC section, ATO section, subway gate and PSD must have opened and crossed always at the time. And the interlock control corrosion protection gate, managing skills with installation, method, using in history, apply to 10rail cars one train sets, and maximum applying 2224% sections of passengers congested that consideration is to be needed. So 2004, SeoulMetro improved technology and basie design of PSD at ATS section. Based on this, from 2005.4 to 2006.6, using subway 2lines per 12stations set the model installation(full type 11stations, half type 1station) After installing in case of success, it is going about to suggest that effective analysis and hereafter subject.

• 전력전자학회논문지
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• 제7권2호
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• pp.178-185
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• 2002

본 연구에서는 왜형되고 불평형인 전원의 정상분 순시전압 검출기법(Detection Method of Instantaneous Positive Sequence Voltage : PSD)에 의한 3상 3선 능동전력필터 시스템을 제작하였다. 불평형 및 왜형된 전원전압은 PSD에 의하여 정상분 순시전압을 실시간으로 검출한 후 순시전력이론의 상변환 행렬을 연산하고 있으며, 따라서 왜형되고 불평형된 전원조건에 순시전력이론을 적용하기 위하여 종전의 순시전력이론의 수학적인 구조를 변경할 필요가 없다. 본 연구에서 구현된 방법의 타당성을 입증하기 위해, 왜형된 B상 전압을 20% 증가시킨 전원과 불평형 비선형 부하 조건하에서 정상상태 및 과도상태의 실험을 수행하였으며, PSD가 없는 방법에 비하여 구현된 방법의 유용성을 입증할 수 있었다.