• Journal of rehabilitation welfare engineering & assistive technology
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• v.3 no.1
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• pp.49-53
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• 2009

In this paper, we compared wheelchair seating system between wheelchair users with cerebral palsy and spinal cord injuries. Wheelchair seating system is divided into three parts, seating components, seating cushion, and special functions. Seating components are composed of 10 sections, such as headrest, footrest, etc. There are 4 seating cushions including gel, form, hybrid, and air. Also leg elevation, seat elevation, tilt-in-space, reclining, and standing are special function of the wheelchair. There are 10 wheelchair users, 5 with celebral palsy, and 5 with spinal cord injuries who have participated in this study. 10 wheelchair users have been customers of rehabilitation technology center in national rehabilitation center. On the result, SCI group mostly uses headrest, and Humeral blocks (seating components), air cushion (seating cushion), and tilt in space, reclining (special functions). On the other hand, CP group uses adductor, abductor, and pommel (seating components), form cushion (seating cushion), and some of CP group uses reclining (special functions)

• Fashion & Textile Research Journal
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• v.7 no.4
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• pp.419-425
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• 2005

The purpose of this study is to analyze the physical characteristic by directly measuring the wheelchair using disabled women. The subjects were 103 disabled women of wheelchair used women and between 20 - 55 years of age. The result of this study is as follow. There was a remarkable difference in the physical characteristic of wheelchair using disabled women due to their cause of disability. The cause of disability was classified into the 4 groups; poliomyelitis, spiral cord injury, muscular dystrophy, cerebral palsy. Poliomyelitis disability generally had a large horizontal area due to their strong upper body. People with spiral cord injury disability was shown to have the largest height, cervical height, waist back length, crotch length, knee length, The group of muscular dystrophy disabled people have the shortest length of body and also lean. The cebral palsy group of disabled people has an average length and height size body. A comparison of anthropometric measurements of wheelchair using disabled women with National Anthropometric Survey Korea(1997) was significant difference. People with poliomyelitis disability was shown to have a larger waist back length, neck point to breast point compared to normal women, but stature, crotch length was shorter compared to normal women. People with spiral cord injury disability had a similar in the vertical area. The group of muscular dystrophy and cebral palsy disabled people was short and smaller in general compared to a normal woman.

• IEMEK Journal of Embedded Systems and Applications
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• v.8 no.1
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• pp.61-67
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• 2013

Wheelchair users have a difficulty in managing their weight because there is lack of measure systems and even though the users have the system, it costs too much. Thus, purpose of this study is for developing the portable weight scale automatic device to help wheelchair users by monitoring their weight on the wheelchairs in real time. Portable weight scale automatic device composed by four strain gauges, and the device was connected with mobile phone so that wheelchair users were able to check their weight in real time. In order to evaluate the device performance, 10 normal subjects and 10 disabled subjects participated in this study. The subjects' truth weight and measured weight by the device are compared. The weigh difference within normal subjects was $0.75{\pm}0.80kg$, and the weigh difference within disabled subjects was $1.02{\pm}0.74kg$. Difference between the truth weigh and the measured weigh were not statistically different. The reason for this error occurred is inaccuracy of the loadcell installation and calibration. If this problems get solved, the measured indicator is expected to help wheelchair users to manage their weight.

• Korean Journal of Applied Biomechanics
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• v.13 no.3
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• pp.181-197
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• 2003

The Purpose of this study was to examine the kinematic analysis of the upper-limb motion of wheelchair basketball free throw shooting. Three-dimensional kinematic data were obtained from 8 male wheelchair basketball players performing a successful free throw. Players were divided into three groups, according to their IWBF classification(Group 1: 1 point players, Group 2: 2-2.5point players and Group 3:3.5-4 point players) Wheelchair basketball free throw motions were taken by video camera. The three-dimensional coordinates was processed by DLT. Players from Group 1 and 2 tended to release the ball from a lower height, with greater velocity and release angle. Players from Group 1 showed greater shoulder horizontal adduction and horizontal abduction angle, wrist ulnar flexion and radial flexion angle, and trunk angle. but players from Group 2 appeared lower shoulder abduction. Upper limb angular velocity showed most greatly in hands from Group 1, upperarm from Group 2, and forearm from Group 3.

• Archives of design research
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• no.18
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• pp.123-134
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• 1996

For handicapped person who have a handicap in moving, vehicles are indispensible, especially in the viewpoint of handicapped person's participation for social life by rehabilitation, the freedom of movement equaling to nonnal person is a important factor for improving the quality in being complete growth.In the purposese of positively social participation of handicapped person, this study investigated the general problems about using a means of transportation in the users of wheelchair and for solving these problems and approached, in the viewpoint of styling, vehicles were considered from character of self-supporting in getting on and off a car. For that first, this study was progressed by suggesting invigorating convenience facilities in already established vehicles for the user of a wheelchair and the part of moulding of modified vehicles in a structure. Moreover, making a selection of domestic vehicles arbitrarily, analyzing a internal structure of a boarding of a wheelchair, and suggesting the modified model of vehicles by the sketch.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.12
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• pp.5878-5904
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• 2017

This paper proposes a novel intelligent wheelchair vehicle system that enables upper limb exercises, lower limb standing exercises and rehabilitation training in a daily life. The proposed system, which can be used to prevent at least the degeneration of body movements and further atrophy of musculoskeletal system functions, considers the characteristics and mobility of the old and the disabled. Its main purpose is to help the old and the disabled perform their daily activities as much as they can, minimizing the extent of secondary disabilities. In other words, the system will provide the old and the disabled with regular and quantitative rehabilitation exercises and diagnosis using the wheelchair-based upper/lower limb rehabilitation vehicle system and then verify their effectiveness. The system comprises an electric wheelchair, a biometric module to identify individual characteristics, and an upper/lower limb rehabilitation vehicle. In this paper the design and configuration of the developed vehicle is described, and its operation method is presented. Moreover, to verify the tracking performance of the proposed system, dangerous situations according to biosignal changes occurring during the rehabilitation exercise of a non-disabled examinee are analyzed and the performance of the upper/lower limb rehabilitation exercise function depending on muscle strength is evaluated through a neural network algorithm.

• Journal of the Korea Safety Management & Science
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• v.2 no.1
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• pp.27-39
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• 2000

국제연합은 1975년에 "장애인 권리선언"을 결의하였고, 1981년을 "세계 장애인의 해"로 결정하였다. 우리나라에서도 1981년 6월 5일, 법률 제 3452호 "심신장애자 복지법"을 제정, 공포하였고 1989년 12월 30일 "장애인 복지법"으로 개정하였다. 한편, 미국에서는 1990년 7월 26일 George Bush 전 대통령이 "The American with Disabilities Act of 1990(ADA)"에 서명하였다. 이 법은 인종, 성별, 출신지, 그리고 종교에 관계없이 장애자에게도 같은 시민 권리 보호를 제공한다는 것이다. 그럼에도 불구하고 장애인을 위해 설계된 건물이나 시설물들이 그렇게 많지 않다는데 그 문제점이 있다. 따라서 본 연구의 목적은 신체 장애인에게 “동등한 생활의 질”을 제공하자는 데 있다. 그에 따른 목표로써 신체장애에 대한 구분이 이루어 졌고, 이동 수단으로서의 wheelchair에 대해 조사되었고, ADA accessibility guidelines가 분석되었다. 또한 인간공학과 감성공학으로 재활공학에 접근하였으며 가상현실이 이용되는 현 추세도 연구되었다. 결론적으로, 제시된 guidelines를 이용하여 가상현실의 세계에서 충분히 simulation을 마친 후에 장애인을 위한 좀더 과학적이고 합리적인 건물 또는 시설물 그리고 wheelchair를 제작할 수 있으면 한다.과학적이고 합리적인 건물 또는 시설물 그리고 wheelchair를 제작할 수 있으면 한다.

• Journal of the Ergonomics Society of Korea
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• v.27 no.3
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• pp.23-32
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• 2008

This study attempts to develop improved ingress and egress in vehicle for disabled wheelchair people who driving is available, after investigating the ingress and egress relation demand and the inconvenient factor in the vehicle. An experiment was performed for that disabled wheelchair people to analyze the characteristics of ingress and egress relation operation through the questionnaire survey and the camera photographing. The results suggest various improvements possibilities in inside handlebar as a main factor. Through analysis of disabled wheelchair person's ingress and egress tendency, the alternative shape and position of inside handlebar are suggested. Also, this paper aimed to draw ingress and egress improvement proposal by executing a verification experiment and collecting the preferences from disabled people.

• Korean Journal of Applied Biomechanics
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• v.13 no.1
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• pp.109-119
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• 2003

The purpose of this study was to investigate differences of the mechanical efficiency on the characteristics of the basketball wheelchairs(cambers & size of the handrims). Nine healthy and normal wheelchair basketball players who had no impairments to their upper extremities were volunteered to participate in this study. $VO_2$ was collected using automatic gas analyzer(vmax29). Gross efficiency, net efficiency and work efficiency were analyzed from the calculated external power output and energy expenditure. The results were followed. First, gross efficiency in the basketball wheelchairs was observed across the range from 4 to 10%. Gross efficiency in this study showed less values than that from the literature reviewed in the arm cranking(15%), racing wheelchair(above 30%), gait(27%) and cycling(18-23%). Second, the small size of handrim(61cm) at the 16 degrees of camber produced higher efficiency values than the large size of handrim(66cm) whereas the different sizes of handrim at the 20 degrees of camber did not show any pattern. Third, both faster speed($1.11^m/s{\rightarrow}1.39^m/s$) and increases in treadmill inclination produced increases in energy expenditure. The results of this study may provide not only better understanding of the mechanical efficiency with adequate camber degree and proper size of handrim but also fundamental information for manufacturing the wheelchair.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.8 no.2
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• pp.89-94
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• 2014

This research notes dramatic increase of wheelchair usage along with rapidly aging population and handicapped people in Korea. Differentiated from existing electronic wheelchairs, we have invented an electronic wheelchair that is collapsible even when the battery is installed and a guardian can ride along with a patient. It is also easy to put in a small space such as car trunks. Additionally, we have improved stoic design to be preferable for patients. The model ensures there's neither abrupt acceleration nor sudden stop and, lastly, is much cheaper than other imported models.