• 한국융합학회논문지
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• 제12권10호
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• pp.211-218
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• 2021

최근에 전동킥보드와 같은 개인형 이동수단의 보급이 급격히 확대되면서 교통사고 발생 건수도 크게 늘고있다. 개인형 모빌리티가 자세 안정성이 낮고 탑승자가 외부로 노출되어 전도 사고나 낙상 사고의 위험이 크기 때문이다. 전동킥보드 사고 방지를 위해 본 논문은 주행 보조 장치로써 자동긴급제동시스템과 안전시동시스템을 제안하였다. 인공지능 기반 물체 인식 기술을 이용하여 주변 위험 요소를 탐지하고 자동으로 제동을 걸 수 있는 시스템을 개발하였다. 또한 운전자의 탑승이 확인되기 전까지 장치의 시동을 보류하는 안전시동시스템도 개발하였다. 상용차와 주행 조건이 매우 다른 개인형 이동 수단에 특화된 첨단 운전자 보조 시스템 융합 기술을 제안한다는 점에서 본 연구의 의의가 있다.

• International Journal of Advanced Culture Technology
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• 제10권3호
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• pp.371-376
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• 2022

The purpose of this study is to develop a walking assistance system with mobility support and life support functions so that the elderly with reduced physical ability and patients who are uncomfortable when moving can move comfortably indoors and outdoors, and help social life. An obstacle recognition sensor module that can be applied indoors and outdoors is installed on a lightweight walking aid. The purpose of this study is to develop a walking assistance system with mobility support and life support functions so that the elderly with reduced physical ability and patients who are uncomfortable when moving can move comfortably indoors and outdoors, and help social life. An obstacle recognition sensor module that can be applied indoors and outdoors is installed on a lightweight walking aid. It is a system structure of an integrated actuator and brake system that can avoid obstacles in consideration of the safety of the elderly and is easy to install on the device. In this paper, the design of a lightweight walking aid was designed to increase the convenience of the socially disadvantaged and the elderly with reduced exercise ability. In addition, in order to overcome the disadvantage of being inconvenient to use indoors due to the noise and vibration of the motor during operation, an In-Wheel type motor is applied to develop and apply a low noise, low vibration and high efficiency drive system.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.590-593
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• 2021

본 연구에서는 목발을 사용하는 교통약자가 물품을 안정적으로 휴대할 수 있도록 도와주는 장치를 개발하였다. 2축 짐벌 구조를 기반으로 서보모터, IMU센서, 아두이노 나노 마이크로프로세서로 구현하였고, Pitch와 Roll 방향 회전을 상쇄하기 위해 센서 각도를 변환 없이 사용하는 기본제어법과 PID 제어법을 사용하여 비교하였다.

• 사회복지연구
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• 제40권3호
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• pp.149-179
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• 2009

본 연구의 목적은 근로빈곤가구의 주거 상향이동에 영향을 미치는 요인이 무엇인지를 파악하는 것이다. 분석결과를 살펴보면, 연령, 교육수준, 근로능력정도, 가구형태, 아동여부, 재산, 수급형태, 지역, 주거위치, 최저시설기준, 주거환경, 대중교통, 교육시설, 영구임대, 국민임대, 전제자금, 월세지원, 대출연체횟수, 부채 요인이 주거상향이동에 영향을 미치는 것으로 나타났다. 분석결과 따른 주요 함의는 다음과 같다. 첫째, 주거지원정책 수립 시 사회복지 측면에서 접근이 이루어져 수급대상의 가구특성 및 개인특성이 충분히 고려되어야 하고, 이를 위해 주거비 지불능력을 제고시킬 수 있는 임대료보조제도가 실시되어야 할 것이다. 둘째, 근로빈곤가구의 주택대출을 위한 금융권의 접근성을 높여야 할 것이다. 마지막으로 정부에서 실시하는 다양한 주거지원정책에 대한 충분한 홍보와 이용률을 높일 수 있는 노력들이 수반 되어야만 근로빈곤가구의 주거빈곤 문제가 해결될 것이다.

• 한국정보전자통신기술학회논문지
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• 제6권3호
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• pp.174-182
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• 2013

The power wheelchair is an important and convenient mobility device. The demand of power wheelchair is increasing for assistance in mobility. In this paper we proposed a robotic wheelchair for mobility aid to reduce the burden from the disabled. The main issue in an autonomous wheelchair is the automatic detection and avoidance of obstacles and going to the pre-designated place. The proposed algorithm detects the obstacles and avoids them to drive the wheelchair to the desired place safely with panning scan from sensors of distance measurement and fuzzy control. By this way, the disabled will not always have to worry about paying deep attention to the surroundings and his path.

• 한국전자통신학회논문지
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• 제4권1호
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• pp.37-45
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• 2009

The power wheelchair is an important and convenient mobility device. The demand of power wheelchair is increasing for assistance in mobility. In this paper we proposed a robotic wheelchair for mobility aid to reduce the burden from the disabled. The main issue in an autonomous wheelchair is the automatic detection and avoidance of obstacles and going to the pre-designated place. The proposed algorithm detects the obstacles and avoids them to drive the wheelchair to the desired place safely with panning scan from sensors of distance measurement and fuzzy control. By this way, the disabled will not always have to worry about paying deep attention to the surroundings and his path.

• 한국사회복지학
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• 제57권4호
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• pp.253-274
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• 2005

이 연구의 목적은 장애인이 활동보조서비스를 이용하기 이전과 이후에 삶의 변화를 알아보고자 하는 것이다. 이 연구를 위해 서울의 한 장애인자립생활센터에서 실시한 활동보조 서비스를 이용한 장애인 9명을 대상으로 비구조화된 질문지를 가지고 직접 면접에 기초한 질적 연구를 수행하였다. 활동보조서비스를 이용한 이후 장애인의 외출의 빈도가 증가하고, 외출 장소가 다변화되는 등 행동영역이 넓어지고, 신체적 활동의 증가는 신체적인 기능이 향상을 가져왔다. 심리적인 측면에서는 장애인이 본인의 삶과 환경에 대해 행사하는 통제력이 증대되고, 본인들의 장애에 대한 긍정적인 수용과 함께 자신감이 증대되었다. 사회적인 관계 측면에서는 대인관계가 향상되고, 가족과의 관계가 이전의 의존적인 관계에서 수평적, 독립적 관계로 변화하였다. 마지막으로 이 연구는 장애인의 삶에 중대한 변화를 가져온 활동보조인의 확대를 제언한다.

• 대한임베디드공학회논문지
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• 제17권3호
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• pp.167-175
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• 2022

With the recent expansion of electric kickboards and bicycle sharing services, more and more people use them. In addition, the rapid growth of the delivery business due to the COVID-19 has significantly increased the use of two-wheeled vehicles and personal mobility. As the accident rate increases, the rule related to the two-wheeled vehicles is changed to 'mandatory helmets for kickboards and single-person transportation' and was revised to prevent boarding itself without driver's license. In this paper, we propose a wearable smart safety equipment, called SafetyHelmet, that can keep helmet-wearing duty and lower the accident rate with the communication between helmets and mobile devices. To make this function available, we propose a safe driving assistance function by notifying the driver when an object that interferes with driving such as persons or other vehicles are detected by applying the YOLO v5 object detection algorithm. Therefore it is intended to provide a safer driving assistance by reducing the failure rate to identify dangers while driving single-person transportation.

• 대한간호학회지
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• 제29권2호
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• pp.328-335
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• 1999

This study was designed to investigate the effects of exercise therapy on joint mobility, daily activity. pain and depression of patients with ankylosing spondylitis. 25 persons with the experimental group and 25 persons with the control group were conveniently sampled among out-patients diagnosed with ankylosing spondylitis at the rheumatism center of H University Medical Center. The control patients were matched to the experimental group and they were selected considering sex and age. The exercise therapy was developed by the author with the assistance of exercise specialists. The program includes muscle relaxation, flexibility, muscle strengths, breathing strengths and straight posture exercises. The 20-minute exercise therapy was carried out to the experimental group once a day for eight weeks from October. 1997 to February, 1998. Before and after the experiments, joint mobility, daily activity, pain and depression were measured respectively. Data were analyzed by $\chi$$^2$-test. t-test, paired t-test and unpaired t-test. The results were as follows : Joint mobility(cervical flexion, extension, shoulder flexion, abduction, hip abduction, knee flexion and fingertip to floor distance) and daily activity in the experimental group after the exercise were significantly increased than that in the control group. The pain and depression score in the experimental group after the exercise were significantly decreased than that in the control group. These findings may indicate that the exercise therapy is effective in increasing the joint mobility and daily activity, and also effective in decreasing pain and depression in patients with ankylosing spondylitis, Accordingly, the exercise therapy can be adopted as an effective nursing intervention for ankylosing spondylitis.

• 한국입자에어로졸학회지
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• 제5권2호
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• pp.83-90
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• 2009

This paper describes a condensation-evaporation method (CEM) to produce size-controlled spherical silver nanoparticles by perturbing coagulation and coalescence processes in the gas phase. Polydisperse silver nanoparticles generated by the CEM were first introduced into a differential mobility analyzer (DMA) to select a group of silver nanoparticles with same electrical mobility, which also enables to make a group of nanoparticles with elongated structures and same projected area. These silver nanoparticles selected by the DMA were then in-situ sintered at ${\sim}600^{\circ}C$, and then they were observed to turn into spherical shaped nanoparticles by the rapid coalescence process. With the assistance of modified converging-typed quartz reactor, we can also produce the 10 times higher number concentration of silver nanoparticles compared with a general quartz reactor with uniform diameter. Finally, the spherical silver nanoparticles with 30 nm were electrostatically deposited on the surface of silicon substrate with the coverage rate of ~4%/hr. This useful preparation method of size-controlled monodisperse silver nanoparticles developed in this work can be applied to the various studies for characterizing the physical, chemical, optical, and biological properties of nanoparticles as a function of their size.