• Proceedings of the KIEE Conference
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• 2008.10b
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• pp.377-378
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• 2008

본 논문은 시각 장애인들의 보행 시 앞을 볼 수 없는 점을 바탕으로 시각을 음성으로 대체하여 장애 물체가 발생하였을 경우 안전을 위하여 위험 요소를 사전에 경보하여 알려주도록 구현하였다. 시각 장애인들이 보행 시 장애 물체가 나타났을 경우 이를 입체 변위 센서인 초음파 센서로 장애물의 위치를 측정하고 측정된 거리 데이터를 근거리 무선통신인 블루투스를 동하여 송 수신하여 사용자인 시각 장애인에게 소형 스피커를 통하여 음성으로 알려주고 경고함으로써 위험 요소를 사전에 대처할 수 있도록 설계를 하였다. 초음파 입체 변위 센서를 이용하여 측정된 거리를 실시간 자동 거리 측정이 가능하도록 시스템을 구현하고 이 데이터를 근거리 무선 통신으로 송 수신하며 수신 모듈이 데이터를 음성으로 전환하여 실시간 자동 경보 시스템을 구축함으로써 보행 장애 위험물 감지가 보다 효율적으로 이루어지고 디지털화되게 시스템을 개선하였다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.3
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• pp.129-145
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• 2016

This paper analyzed and compared the service level and satisfaction of the sidewalks in collector roads from 6 different location, which has a lot of volume of pedestrians. For the study, it performed an investigation of road geometry, flow, research about satisfaction of walking and video recording. Based on this data, this study computed the service level of the sidewalks and pedestrian satisfaction. This study made a sense of correlation between service level and satisfaction. Also it focused on factors influencing on the effectiveness of satisfaction. This study also analyzed the change of walking behavior chracteristics according to the change of the level of satisfaction. This study adopted Multi-Modal Level of Service(MMLOS) method, because it could consider more factors. This study reached the conclusion that MMLOS method cannot completely reflect the level of pedestrian satisfaction. We have to consider more factors than in the current system for use in the development of sidewalk design. The result of this study is expected to reflect the pedestrian satisfaction in future sidewalks design.

• Journal of the Korean Association of Geographic Information Studies
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• v.9 no.2
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• pp.194-205
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• 2006

The purpose of this study is to develop a pedestrian multi-agent model and simulation system using multi-agent theory, which may be utilized as a planning support system for building a comfort and safe environment of pedestrian street. Differing from existing pedestrian models, however, every single pedestrian was regarded as an individual agent in the model. Multiple agents like multiple pedestrians in the street then maintain their own characteristics and respond to surrounding environment. In addition their moving behavior are made by their own decision rules that they have or had acquired through the interactive communications or learning between agents like real world. After verifying the model validation, as the $R^2$ between the predicted value and observed value was up to 0.781, the developed model was applied to Gazwa district within Gyeongsang university village. The simulation system was developed by Flash MX action scripts and the physical environment of the streets was configured with the digital map and ArcGis within computer virtual space. The attribute data of buildings such as type and size of commercial business were collected through the field survey and combined with physical features. Then the effect of the variation of building attractiveness and the occurrence of street events to pedestrian environment were simulated. Through the experiments this study could make suggestions to improve pedestrian environment.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.2
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• pp.115-121
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• 2022

As city environments have recently become crowded, there are many obstacles that interfere with the walking of the visually impaired on pedestrian roads. Typical examples include ballads, parking breakers and standing signs, which usually do not get in the way, but blind people may be injured by collisions. To solve such a problem, many solutions have been proposed, but they are limited in applied in practical environments due to the several restrictions such as outside use only, inaccurate obstacle sensing and requirement of special devices. In this paper, we propose a new method to automatically detect obstacles while walking on the pedestrian roads and warn the collision risk in advance by using only sensors embedded in typical mobile phones. The proposed method supports the walking of the visually impaired by notifying the type of obstacles appearing in front of them as well as the distance remaining from the obstacles. To accomplish this goal, we utilized an object recognition technology applying the latest deep learning algorithms in order to identify the obstacles appeared in real-time videos. In addition, we also calculate the distance to the obstacles using the number of steps and the pedestrian's stride. Compared to the existing walking support technologies for the visually impaired, our proposed method ensures efficient and safe walking with only simple devices regardless of the places.

• Landscaping Tree
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• s.112
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• pp.38-41
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• 2009

인천경제자유구역 내의 중앙공원이 2009년 9월에 준공하여 일반시민들에게 개장되었다. 센트럴파크는 동고서저와 강으로 대변되는 한반도의 지형적 특색을 담고 있으며 동고서저는 구릉이 있는 산책로와 낮은 잔디밭으로, 강은 수로로, 다도해 남해는 인공 섬이 있는 수변 공간으로 연출돼 있으며 인공으로 조성된 수로에는 수상택시가 다니고 있다. 지하에는 2,700여대가 추자할 수 있는 주차장을 공원과 분리하여 조성하였고 수로주변에는 보행자 산책로, 자전거도로 등이 조정되고 추후 공원 내 박물관 및 생태관이 조성될 예정이다. 센트럴 파크는 인천광역시 송도동 24-5번지 일원에 위치하고 있으며 면적은$411,319m^2$, 사업기간은 2007. 2. 1 ~ 2009. 7. 31, 사업비는 1,900억원(공원 1,200억원, 주차장 700억원)정도이며 주요시설로는 해수 수로, 수상택시 및 무빙스테이지, 지하주차장, 조각원, 정형식 정원, 초지원, 보트하우스, 비지터센터 등이 있다.

• Journal of the Korean Society of Physical Medicine
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• v.7 no.3
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• pp.379-385
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• 2012

연구목적 : 본 연구의 목적은 태권도 프로그램이 노인의 균형능력에 어떠한 영향을 미치는지에 대해 알아보는 것이다. 연구방법 : 대상자는 본 연구에 대해 설명을 들은 후 자원한자로서 65세 이상의 노인이었다. 실험군은 태권도 프로그램 그룹으로서 17명이었다. 태권도 프로그램을 주3회씩 6주간 시행하였고 모든 대상자의 균형능력을 평가하기 위하여 BPM, GAITrite, Berg 균형척도를 실험전후로 평가하여 자료를 수집하였다. 수집된 자료는 SPSS 14.0으로 대응표본 t-test를 사용하여 유의수준 ${\alpha}$=.05에서 통계 처리 하였다. 연구결과 : 태권도 프로그램을 시행한 결과 프로그램 실행 전에 비해 오른쪽 활보폭, 왼쪽 보폭, 왼쪽 활보폭, 버그 균형척도에서 통계적으로 유의한 증가를 나타내었다. 그리고 최대 동요속도, 동요거리, 오른쪽 기저 지지면, 오른쪽 양하지 지지기, 왼쪽 기저지지면, 왼쪽 양하지 지지기에서 통계적으로 유의한 감소가 있었다. 결론 : 태권도 프로그램을 시행한 결과 오른쪽 활보폭, 왼쪽 보폭, 왼쪽 활보폭, 버그 균형척도에서 유의한 증가와 최대 동요속도, 동요거리, 오른쪽 기저 지지면, 오른쪽 양하지 지지기, 왼쪽 기저지지면, 왼쪽 양하지 지지기에서 유의한 감소는 균형 제어에 긍정적인 영향을 미칠 것으로 판단된다. 따라서 이러한 균형 제어 능력의 향상은 노인의 보행에 있어서의 낙상 예방에 효과적일 것으로 사료된다.

• Journal of Korean Society of Transportation
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• v.32 no.6
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• pp.638-650
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• 2014

The objective of this study is to identify the causes of pedestrian volume path to the destination by investigating the influential levels of regional and planning features in the central area of Seoul. Regional characteristics can be classified from the result of the analysis and through the spatial characteristics of pedestrian volume. For global scale analysis, Ordinary Least Squares (OLS) regression is used for the degree of influence of each characteristics to pedestrian volume. For the local scale, Geographically Weighted Regression (GWR) is used to identify regional influential factors with consideration for spatial differences. The results of OLS indicate that boroughs with transportation facilities, commercial business districts, universities, and planning features with education research facilities and planning facilities have a positive effect on pedestrian volume path to the destination. Correspondingly, transportation hubs and congested areas, commercial and business centers, and university towns and research facilities in the Seoul central area can be identified through the results of GWR. The results of this study can provide information with relevance to existing plans and policies about the importance of regional characteristics and spatial heterogeneity effects on pedestrian volume, as well as significance in the establishment of regional development plans.

• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.1
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• pp.1-9
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• 2019

The objective of this study was to derive the served distance of the senior-friendly park considering physical changes, which were estimated through a comparison experiment at an actual target site. The time to walk 500m was examined because 500m is considered the served distance of a neighborhood park and as a standard set by the city. The mean walking time of the control group (younger than 65 years) was 536 seconds, while that of the treatment group (older than 65 years) was 889 seconds, which was approximately 1.7 times longer than the control group. The results of this study also showed that the walking time of females was longer than that of males when they were older than 65 years old. The walking velocities of the control group and the treatment groups were also calculated using the mean walking time. The weight estimated by a proportional formula was 0.6. When it was applied to 500m, which is the served distance of a neighborhood park, the served distance of the senior-friendly park was estimated as 300m. Lastly, the green service excluded area was quantified by applying the 300m, the served distance of a senior-friendly park, to the Jung-gu, Daegu, which had the highest elderly population in the Daegu Metropolitan City. The results of this calculation showed that the area served by a city park was $2,425,747m^2$ and the area excluded from the city park service was $4,627,700m^2$ for senior citizens. The results also showed that, in terms of the distributive equity, the administrative districts received unequal am ounts of urban green area services.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.585-592
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• 2008

The aging society comes, the number of the old people expended. Technical aids allow elderly and handicapped people to live independently in their private homes as long as they wish. As a contribution to these required technological solutions, a demonstrator platform for a walking assistance robot. robot which has the capability to perform fetch and carry and various other supporting tasks. In this study, we addresses the development of a walking assistance robot system. We execute static analysis, vibration analysis and flexible dynamics to reserve stability at the design. Each motion of the robot uses a linear actuator and gears. Motion can be distinguished into 3 parts depending on the up & down, rotation, and cushion trans. In each motion, we compare the displacement of the case to be rigid with the case to be flexible. As a result, manufactured and feasibility of the walking assistance robot is validated through preliminary experiments.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.9
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• pp.133-144
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• 2000

The dynamic walking planning and the inverse dynamics of the biped robot is investigated in this paper. The biped robot is modeled with 14 degrees of freedom rigid bodies considering the walking pattern and kinematic construction of humanoid. The method of the computer aided multibody dynamics is applied to the dynamic analysis. The equations of motion of biped are initially represented as terms of the Cartesian corrdinates then they are converted to the minimum number of equations of motion in terms of the joint coordinates using the velocity transformation matrix. For the consideration of the relationships between the ground and foot the holonomic constraints are added or deleted on the equations of motion. the number of these constraints can be changed by types of walking patterns with three modes. In order for the dynamic walking to be stabilizable optimized trunk positions are iteratively determined by satisfying the system ZMP(Zero Moment Point) and ground conditions.