• Proceedings of the Korean Society of Computer Information Conference
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• 2010.07a
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• pp.113-116
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• 2010

본 논문은 보행중인 시각장애인에 장착된 카메라로부터 획득한 영상에서 보도와 차도 영역을 구분하기 위한 영역분할 기법과 질감 특징추출 기법에 대해 제안한다. 영상내의 허프 변환을 이용한 라인검출을 통해 도로 경계선을 검출하고, 분할된 영역을 원근에 따라 3 레벨로 구분하여 질감 특징성분을 추출함으로써 보도와 차도영역을 분리한다. 보도블럭이 가지는 복잡하고 다양한 특성의 패턴과 차도의 균일한 질감을 가진 영역의 특성을 비교하기 위하여 회전에 강건한 LBP, GLCM 질감 특징성분들을 이용함으로써 두 영역을 구분하였다. 제안된 방법은 낮과 밤 영상에 대해 실험한 결과 조도의 변화에 강건하게 영역을 분리할 수 있었고, 또한 보행자와 장애물이 많은 영상에서도 회전이나 폐색에 관계없이 영역 분리가 가능함을 검증하였다.

• Annual Conference of KIPS
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• 2022.11a
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• pp.191-193
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• 2022

유모차 사고는 추락/넘어짐/미끄러움으로 인해 발생하는 사고가 가장 큰 비율을 차지한다. 또한 보행이 불편한 고령자가 유모차 또는 보행기를 보조기구로 사용할 때에도 유모차와 유사한 사고 발생 확률이 높다. 기존의 유모차, 전동 휠체어, 보행기 등 출시 제품들은 넘어짐과 관련된 사고예방 기능은 구현되지 않았으므로 사고를 예방하기 힘들다. 이를 해결하기 위해 본 연구는 기울기에 따라 보행 중 안전을 보조하고, 속도에 따른 넘어짐 관련 사고를 예측하여 보호자 및 주변 사람들에게 위험을 알리는 사고예방을 위한 보행보조시스템을 설계하고 구현하였다. 이 시스템을 통해 유아 및 고령자가 이용하는 보행보조기를 더욱 안전하게 사용하여 2차 사고를 예방할 수 있는 효과를 기대할 수 있다.

• Journal of the Korean Society of Physical Medicine
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• v.18 no.4
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• pp.29-35
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• 2023

PURPOSE: High-intensity physical therapy may help improve some gross motor developmental delays through an increased treatment frequency. This study describes an increase in physical therapy frequency and intensity over an eight-week time frame for a child with a rare genetic neurodevelopmental disorder. METHODS: A single-subject research was performed. The subject was a nine-year-old boy with MECP2 Duplication Syndrome. The outcome measure consisted of one time before and after the intervention. An intensive physical therapy program was applied to this subject. The treatments included reciprocal crawling, high kneeling, tailor sitting, weight-bearing and shifting training to facilitate ankle balance strategies and training to walk without assistance. RESULTS: After the eight-week follow-up, the child achieved a gradual improvement in the gross motor function measures, and the mother reported that the child frequently engaged in tailor sitting and independently walking. CONCLUSION: This case study highlights that intensive physical therapy improved the overall motor function of a child with MECP2 duplication syndrome.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.4 no.1
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• pp.45-58
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• 1998

This study was carried out to find out general characteristics and health-related behaviors of elders aged 65 or over and factors related to their activities of daily living. and thus to contribute to their health maintenance and promotion. The subjects were 200 elders who had resided at Tae Jean city, with males and females was scaled 1 : 3. To collect data for study, the field survey was conducted from March 20 to October 31, 1997 with questionaire. 1. 65.0% of the subjects were 65-75 years old, while 35.0% were 75 years old or over, 20.5% of them were illterate, 46.5% could read and write Korean. graduated from elementary school, and 11.5% middle school or higher level. 2. 28.5% of subjects perceived their current health status, 46.0% of men and 38.0% of women as fair, In genal elderly men perceived their health status better than elderly women. Among the subjects, 62.0% of men and 57.0% of women reported that they experienced one or more illnesses during the last year. 3. 76.0% of men and 33.0% of women were current smokers. 55.0% of current smokers. 55.0% of current make smokers smoked 11-12 cigarettes per day and 53.2% of current female smokers smoked less than 10 cigarettes per day. 4. 76.0% of men and 37.3% of women drank alchol currently. 5. 56.0% of men and 34.7% of women practiced regular exercise for their health maintenance and promotion. 6. In general, 38.5% of subjects needed other's assistance for doing one or more Activites such as doing heavy home work, Walking up and down stairs or walking half a mile. 7. Common disease of the subjects were hypertention, depenerative arthritis and diabetes mellitus in order.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.6
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• pp.1241-1248
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• 2019

In this paper, an auxiliary device was implemented to help blind people more safely from obstacles or risk factors while walking. The ultrasonic sensors detect obstacles in the front, so that the noise gap and the vibration intensity of the buzzer can be heard differently by distance and angle, and so the situation can be perceived by pedestrians. When the ambient light becomes darker than the light intensity set using the CdS resistance value of the light sensor, the LED automatically turns on, makes it easier for pedestrians to recognize the position of the auxiliary device through buzzer if the pedestrian misses the aid using the gyro sensor's slope. Moreover, the location and situation of the blind were transmitted to the caregiver to check safety and behavior using GPS and Bluetooth.

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.4
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• pp.533-538
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• 2017

In this thesis, the ambulatory aid mechanism was implemented so that blind people could be safer at risk of walking outdoors. Using ultrasonic sensors, the obstacles can be detected when the distance between the obstacle is within 50 cm of the obstacle. If the light sensor becomes less than 25 lux, the LED will automatically turn on and help the safety of the visually impaired and the security of sight of the peripheral walkers. Color recognition sensors increase the rate of recognition of yellow color by the detection distance is 1cm, it vibrated when yellow light was detected. Using GPS with 7.3 m of error range, the guardian was able to check the location of the visually impaired.

• Journal of the Korean Society for Precision Engineering
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• v.29 no.3
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• pp.346-353
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• 2012

The purpose of this study is to verify the energy efficiency of the integrated system combining human and a lower extremity exoskeleton robot when it is applied to the proposed gait pattern. Energy efficient gait pattern of the lower limb was proposed through leg function distribution during stance phase and the dynamic-manipulability ellipsoid (DME). To verify the feasibility and effect of the redefined gait trajectory, simulations and experiments were conducted under the conditions of walking on level ground and ascending and descending from a staircase. Experiments to calculate the metabolic cost of the human body with or without the assistance of the exoskeleton were conducted. The energy consumption of the lower extremity exoskeleton was assessed, with the aim of improving the efficiency of the integrated system.

• Journal of Korean Physical Therapy Science
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• v.24 no.1
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• pp.38-48
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• 2017

Background: This study was carried out to find out general characteristics and health-related behaviors of elders aged 65 or over and factors related to their activities of daily living, and thus to contribute to their health maintenance and promotion. The subjects were 200 elders who had resided at Cheju city, with males and females was scaled 1 : 3. Methods: To collect data for study, the field survey was conducted from March 20 to October 31, 2016 with questionaire. Results: This study are as follows; 65.0% of the subjects were 65-75 years old, while 35.0% were 75years old or over, 20.5% of them were illterate, 46.5% could read and write Korean, graduated from elementary school, and 11.5% middle school or higher level. 28.5% of subjects perceived their current health status, 46.0% of men and 38.0% of women as fair, In general elderly men perceived their health status better than elderly women. Among the subjects, 62.0% of men and 57.0% of women reported that they experienced one or more illnesses during the last year. 76.0% of men and 33.0% of women were current smokers. 55.0% of current smokers. 55.0% of current make smokers smoked 11-12 cigarettes per day and 53.2% of current female smokers smoked less than 10 cigarettes per day. 76.0% of men and 37.3% of women drank alchol currently. 56.0% of men and 34.7% of women practiced regular exercise for their health maintenance and promotion. In general, 38.5% of subjects needed other's assistance for doing one or more Activites such as doing heavy home work, Walking up and down stairs or walking half a mile. Common disease of the subjects were hypertention, depenerative arthritis and diabetes mellitus in order. Conclusion: This study ADL activity are significant effect.

• Annual Conference of KIPS
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• 2021.11a
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• pp.1290-1293
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• 2021

Currently, blind people are experiencing a lot of inconvenience in their daily lives. In order to provide helpful service for the visually impaired, this study was carried out to make a new smart glasses that transmit information monitoring walking environment in real-time object recognition. In terms of object recognition, YOLOv4 was used as the artificial intelligence model. The objects, that should be identified during walking of the visually impaired, were selected, and the learning data was populated from them and re-learning of YOLOv4 was performed. As a result, the accuracy was average of 68% for all objects, but for essential objects (Person, Bus, Car, Traffic_light, Bicycle, Motorcycle) was measured to be 84%. In the future, it is necessary to secure the learning data in more various ways and conduct CNN learning with various parameters using darkflow rather than YOLOv4 to perform comparisons in the various ways.

• Proceedings of the KIEE Conference
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• 2008.10b
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• pp.337-338
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• 2008

2008년 현재 우리나라는 10%의 인구가 60세 이상인 이른바 고령사회에 접어들었다. 노인 인구의 증가로 인해 노인이 여가생활 또는 일반생활을 보조하기 위한 보행 보조기에 대한 관심이 증가되고 있다. 대부분 동력이 없는 보행보조기를 사용하고 있으며 이러한 기구는 경사로 공간 또는 힘이 약한 노인들에게 취약성을 가지고 있다. 이에 동력형 보행보조로봇에 관심이 증가하고 있다. 동력형 보행보조로봇 역시 경사로에 있어서 편리성과 안전성을 높이기 위한 연구가 필요한 실정이다. 이에 본 논문에서는 보행보조로봇이 경사로에 진입 하였을 경우 기울어진 경사로의 정도를 인식하여 모터를 제어 한다. TILT 센서를 이용하여 기울이짐 정도를 측정 하였고, 또한 로봇의 전류 실시간으로 체크하여 로봇의 안전성을 향상 하였다. 제어 시스템 구성은 사용자의 보행의지를 파악하기위해 FSR 센서를 부착하여 조향장치로 사용하였으며, 경사로를 인식하기 위해 Liquid 타입의 TILT 센서를 사용하였으며, 모션 제어를 위해 DSP를 사용하였다. 본 제어 시스템을 보조보행로봇에 적용하였을 때, 보행보조로봇이 오르막 경사로에 진입시 기존보다 힘을 적게 사용하여 경사로를 진행하였으며, 경사로에서 브레이크 작동속도가 향상 되었다. 또한 내리막 경사로에서는 모터의 힘을 적게 사용하고 중력의 힘을 사용하여 이를 통해 전류의 소비량을 개선 하였다.