Journal articles: 'Power wheelchair'

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LEE, BUM-SUK, JUNG AH LEE, HYUN CHOI, HAN RAM PAK, EUN JOO KIM, JAE HYUK BAE, SUNG MOON YOO, and HYOSUN KWEON. "DEVELOPMENT OF THE USABILITY SCALE FOR POWER WHEELCHAIRS AND ITS APPLICATION IN POWER WHEELCHAIRS USERS IN KOREA." Journal of Mechanics in Medicine and Biology 20, no. 10 (December 2020): 2040031. http://dx.doi.org/10.1142/s021951942040031x.

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More of power wheelchair users’ needs have to be met in the making of power wheelchairs. However, there has been no usability scale for the power wheelchair that is specifically focusing on the users’ needs. The purpose of this study was to test and validate a usability scale for power wheelchairs (USPW). The USPW has been developed through interviews with power wheelchair and consultations with a panel of experts. The USPW consists of four evaluation categories (safety, operation, efficiency, and satisfaction). In order to validate it, its usability and the Quebec User Evaluation of Satisfaction Assistive Technology (QUEST) were also administered to 50 power wheelchair users. The USPW was extracted 12 items from safety, 7 from operation, 5 from efficiency, and 14 from satisfaction, with a total of 38 items. The content validity met the criteria. The total internal consistency (Cronbach’s [Formula: see text]) of the USPW was 0.75. Users of power wheelchair demanded that the safety of moving on the slopes, the satisfaction of storage space for power wheelchairs, and the repair service process would be improved. The correlation between the USPW and the QUEST was significant ([Formula: see text]). The USPW may be very useful to evaluate overall usability of power wheelchair including its safety, operability, efficiency, and satisfaction. The developed usability scale (USPW) may help wheelchair makers become aware of the problems of present power wheelchairs and the users’ needs, allowing them to make better ones.

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Lefkowicz, A. Todd. "Simulation of a Power Wheelchair." Proceedings of the Human Factors Society Annual Meeting 33, no. 17 (October 1989): 1171. http://dx.doi.org/10.1518/107118189786757950.

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A computer-based wheelchair simulation will be demonstrated. Such a wheelchair simulator could be used in rehabilitation both to prescribe controls for patients and to develop new types of wheelchairs. The selection of a wheelchair controller and control dynamics for a specific patient currently involves the actual use of a variety of power wheelchairs. A valid simulator could reduce costs by eliminating the need to test and evaluate a set of power wheelchairs for each patient, increase safety of the patient by eliminating the risk associated with learning to operate a new power wheelchair, and ease collection of performance data by providing automated data collection. Further, the simulation could be used to test control dynamics as related to the user's perspective view when developing new power wheelchair products. The simulation runs on a personal computer with low resolution color display. The realism of the display is augmented by the use of a Fresnel lens to increase the three-dimensional effect. The display is updated frequently to ensure accurate control feedback. The performance measures used to test the simulation include both time and accuracy to move through a computer simulated course and an identical physical course. The initial results from user testing are being used as the basis for an iterative redesign process before formal testing is initiated.

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Campeau-Vallerand, Charles, François Michaud, François Routhier, Philippe S. Archambault, Dominic Létourneau, Dominique Gélinas-Bronsard, and Claudine Auger. "Development of a Web-Based Monitoring System for Power Tilt-in-Space Wheelchairs: Formative Evaluation." JMIR Rehabilitation and Assistive Technologies 6, no. 2 (October 26, 2019): e13560. http://dx.doi.org/10.2196/13560.

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Background In order to prevent pressure ulcers, wheelchair users are advised to regularly change position to redistribute or eliminate pressure between the buttocks region and the seat of the wheelchair. A power tilt-in-space wheelchair (allowing simultaneous pivoting of the seat and the backrest of the wheelchair toward the back or front) meets many clinical purposes, including pressure management, increased postural control, and pain management. However, there is a significant gap between the use of tilt as recommended by clinicians and its actual usage. A Web-based electronic health (eHealth) intervention, including a goal setting, monitoring, reminder, and feedback system of the use of power tilt-in-space wheelchairs was developed. The intervention incorporates behavior change principles to promote optimal use of tilt and to improve clinical postprocurement follow-up. Objective This study aimed to conduct a formative evaluation of the intervention prototype to pinpoint the functionalities needed by end users, namely, power wheelchair users and clinicians. Methods On the basis of an evaluation framework for Web-based eHealth interventions, semistructured interviews were conducted with power wheelchair users and clinicians. A content analysis was performed with a mix of emerging and a priori concepts. Results A total of 5 users of power tilt-in-space wheelchairs and 5 clinicians who had experience in the field of mobility aids aged 23 to 55 years were recruited. Participants found the Web interface and the physical components easy to use. They also appreciated the reminder feature that encourages the use of the tilt-in-space and the customization of performance goals. Participants requested improvements to the visual design and learnability of the Web interface, the customization of reminders, feedback about specific tilt parameters, and the bidirectionality of the interaction between the user and the clinician. They thought the current version of the intervention prototype could promote optimal use of the tilt and improve clinical postprocurement follow-up. Conclusions On the basis of the needs identified by power wheelchair users and clinicians regarding the prototype of a power tilt-in-space wheelchair monitoring system, 3 main directions were defined for future development of the intervention. Further research with new wheelchair users, manual tilt-in-space wheelchairs, various age groups, and family caregivers is recommended to continue the formative evaluation of the prototype.

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Kaisumi, Aya, Yasuhisa Hirata, and Kazuhiro Kosuge. "Investigation of User Load and Evaluation of Power Assistive Control on Cycling Wheelchair." Journal of Robotics and Mechatronics 25, no. 6 (December 20, 2013): 959–65. http://dx.doi.org/10.20965/jrm.2013.p0959.

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Wheelchairs, walkers, and electric wheelchairs are well-known support devices for patients with lowerlimb disabilities. However, disuse of lower limbs presents an ongoing barrier to rehabilitation, and can eventually lead to disuse syndrome. To overcome this situation, researchers have designed the cycling wheelchair. The cycling wheelchair is accessible to most patients who can bend their lower limbs. It is primarily used in rehabilitation facilities with planar floors and gentle slopes. To become practicable for everyday use, cycling wheelchairs require sufficient power to travel up steeper slopes or across bumpy surfaces. This paper aims to clarify the power consumed by users in everyday environments by measuring the tread force on the pedals. The investigation targets lower-limb disabled subjects and unimpaired subjects. It was observed that some of the users could not summon sufficient power for uphill travel. In addition, hemiplegic subjects with only one unimpaired leg placed large load on their healthy limb. As a first step to overcome this problem, we introduce traveling resistance compensation control into a cycling wheelchair and evaluate its efficacy.

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Oliveira, Saulo, Afonso Bione, Lúcia Oliveira, Adalberto da Costa, Fernando de Sá Pereira Guimarães, and Manoel da Cunha Costa. "The Compact Wheelchair Roller Dynamometer." Sports Medicine International Open 1, no. 04 (July 2017): E119—E127. http://dx.doi.org/10.1055/s-0043-111404.

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AbstractThe equipment for evaluating the propulsion of a wheelchair is very complex and expensive. To validate a new dynamometer prototype for assessing the propulsion capacity of wheelchairs, 21 healthy subjects (age: 20.9±2.4 yr; weight: 68.9±7.9 kg; height: 174.0±7.1 cm; BMI: 22.7±2.5 kg·m−2) who do not normally require wheelchairs performed a sprint protocol for 20 s after a 1-min warm-up. The power and rotation data acquired by the prototype (both right and left sides) were compared with those of a reference system via high-speed videography (240 fps). The results showed high levels of accordance (95% CI), excellent values for the intraclass correlation coefficient (ICC: .99; P<0.00), no significant differences in the rotation (P=0.91) and power (P=0.94) between the methods. The proposed equipment met the validation criteria and thus can be applied as a new tool for assessing wheelchair propulsion.

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Muharom, Syahri, and Tukadi Tukadi. "Wheelchair Robot Movements Using Flex Sensor Glove." Jurnal INFORM 3, no. 2 (October 3, 2018): 84. http://dx.doi.org/10.25139/inform.v3i2.964.

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The wheelchair is one of the most commonly used tools for disability person perform activities. But many wheelchairs still use human power to move them, so this research tries to make a wheelchair robot with movement control using a flex sensor glove. In this system using two controllers where one controller is made as a master and the other as a slave, and use Bluetooth as a medium of communication between two controllers. Flex glove sensors are paired in the hands of the user or others as the master, and the controller is in a wheelchair as a slave. Sensor data in hand is sent using Bluetooth master and received by Bluetooth slave, then processed by slave controller and give a command to the motor driver to move the wheelchair. It is expected that the development of wheelchairs can facilitate people with physical disabilities in conducting activities.

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Šakaja, Laura, Ksenija Bašić, Ružica Vuk, Zoran Stiperski, and Andrijana Horvat. "Accessibility in Zagreb for power wheelchair users." Hrvatski geografski glasnik/Croatian Geographical Bulletin 81, no. 2 (December 19, 2019): 43–68. http://dx.doi.org/10.21861/hgg.2019.81.02.02.

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Chen, Chu Wei, and Deng Chuan Cai. "A Wheelchair Design for Topple Prevention." Applied Mechanics and Materials 590 (June 2014): 561–65. http://dx.doi.org/10.4028/www.scientific.net/amm.590.561.

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Wheelchairs are an indispensable transportation tool for the aged and for the disabled. Tips and falls are common accidents to current wheelchairs, suggesting wheelchair safety is imperfect. This study thus proposed an anti-tip concept design to improve manual wheelchair safety. The anti-tip wheelchair was ergonomically designed with the following features: (1) diamond pattern wheel alignment enables users to adjust rear-wheel chamber angle and extend the front and rear casters forward and backward respectively to prevent tipping by increasing the base area; (2) adjustable wheel mechanism for indoor and outdoor uses; (3) collinear alignment of the rear-wheel axle and the center of mass in the sagittal plane reduces push frequency and enhances push power; (4) a spring-driven rear caster compression mechanism aids passing over obstacles on the ground; and (5) height adjustable neck rest provides comfort support.

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Wang, Fang, and Jian Guo Zhang. "Mechanical Design for a Power Wheelchair with Self-Actuated Seating Functions Based on Ergonomics." Applied Mechanics and Materials 275-277 (January 2013): 799–802. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.799.

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Wheelchairs with posture change functions are required by clinicians to assist activities of daily living for handicapped people. In this paper, the mechanism of a wheelchair with self-actuated seating functions was designed and its degree of freedom was introduced. Link length was determined based on ergonomics and anthropometry to meet national standards. Kinematics simulation was carried out in MATLAB to investigate the working characteristics of the wheelchair and prove the feasibility of the scheme. Humanized design was explored which was based on ergonomics to satisfy the safety, comfort and efficiency.

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Stredney, Don, Wayne Carlson, J. Edward Swan, and Beth Blostein. "The Determination of Environmental Accessibility and ADA Compliance Through Virtual Wheelchair Simulation." Presence: Teleoperators and Virtual Environments 4, no. 3 (January 1995): 297–305. http://dx.doi.org/10.1162/pres.1995.4.3.297.

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The widespread use of power wheelchairs has greatly increased the requirements for the accessibility of buildings and other architectural structures to handicapped persons. In addition, recent advances in microcomputer technology have made possible increasingly sophisticated power wheelchair interfaces, such as halo, puff and sip, and muscle control mechanisms, which can provide mobility for an even larger portion of the handicapped population. Finally, the ADA (the Americans with Disabilities Act of 1990) requires handicapped accessibility for (almost) all public structures. We have developed a virtual structure prototyping system that allows navigation by a person using a power wheelchair. The system is a tool for three groups of people: (1) for architects and designers, it provides structure visualization that can both improve the handicapped accessibility of building designs and test a structure for ADA compliance; (2) for wheelchair users, it provides more appropriate device fitting and training with wheelchair control mechanisms; and (3) for health care professionals, it provides evaluations of wheelchair users. The system consists of an instrumented, joystick-driven power wheelchair connected to a high-performance graphics workstation; it simulates the actual speed and maneuverability of the particular wheelchair within a virtual structure. The display generates realistic interiors containing multiple light sources and surface textures and is viewed in stereo through lightweight polarized glasses. The system maintains a hierarchical data structure which detects collisions between the virtual wheelchair and the environment. In this paper we discuss (1) the system's user interface, (2) the system's hardware and software configuration, (3) the impact of the system on the architectural design process, and (4) future system additions. In the last section we also discuss virtual manipulation for enabling technology.

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Vanlandewijck, Yves C., Arthur J. Spaepen, and Roeland J. Lysens. "Relationship between the Level of Physical Impairment and Sports Performance in Elite Wheelchair Basketball Athletes." Adapted Physical Activity Quarterly 12, no. 2 (April 1995): 139–50. http://dx.doi.org/10.1123/apaq.12.2.139.

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Fifty-two male elite wheelchair basketball athletes, classified into four functional ability classes, were studied to determine whether overall wheelchair basketball performance in a game situation is related to the functional ability level of the participant. To determine the quality of the individual’s game performance, 18 championship games were videotaped and analyzed by means of the Comprehensive Basketball Grading System. Physical fitness parameters (propulsive force and aerobic power) were determined in specific laboratory conditions. Force application on the wheelchair handrims was measured by means of an ergodyn device. Finally, the subjects, while in their wheelchairs, performed a maximal exercise capacity test on a motordriven treadmill. The analyses indicated significant differences in field performance and aerobic power between Class I and the rest of the classes. However, isometric and dynamic force application on the handrims could not be proven to be functional ability dependent. In conclusion, reducing the number of classes to improve fair and equitable competition in wheelchair basketball was considered viable.

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Wu, Yu-Kuang, Hsin-Yi Liu, Annmarie Kelleher, Jonathan Pearlman, Dan Ding, and Rory A. Cooper. "Power seat function usage and wheelchair discomfort for power wheelchair users." Journal of Spinal Cord Medicine 40, no. 1 (July 1, 2016): 62–69. http://dx.doi.org/10.1080/10790268.2016.1192360.

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Vailland, Guillaume, Yoren Gaffary, Louise Devigne, Valérie Gouranton, Bruno Arnaldi, and Marie Babel. "Power Wheelchair Virtual Reality Simulator with Vestibular Feedback." Modelling, Measurement and Control C 81, no. 1-4 (December 31, 2020): 35–42. http://dx.doi.org/10.18280/mmc_c.811-407.

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Autonomy and the ability to maintain social activities can be challenging for people with disabilities experiencing reduced mobility. In the case of disabilities that impact mobility, power wheelchairs can help such people retain or regain autonomy. Nonetheless, driving a power wheelchair is a complex task that requires a combination of cognitive, visual and visuo-spatial abilities. In practice, people need to pass prior ability tests and driving training before being prescribed a power wheelchair by their therapist. Still, conventional training in occupational therapy can be insufficient for some people with severe cognitive and/or visio-spatial functions. As such, these people are often prevented from obtaining a power wheelchair prescription from their therapist due to safety concerns. In this context, driving simulators might be efficient and promising tools to provide alternative, adaptive, flexible, and safe training. In previous work, we proposed a Virtual Reality (VR) driving simula-integrating vestibular feedback to simulate wheelchair motion sensations. The performance and acceptability of a VR simulator rely on satisfying user Quality of Experience (QoE). Therefore, our simulator is designed to give the user a high Sense of Presence (SoP) and low Cyber-sickness. This paper presents a pilot study assessing the impact of the vestibular feedback provided on user QoE. Participants were asked to perform a driving task whilst in the simulator under two conditions: with and without vestibular feedback. User QoE is assessed through subjective questionnaires measuring user SoP and cyber-sickness. The results show that vestibular feedback activation increases SoP and decreases cyber-sickness. This study constitutes a mandatory step before clinical trials and, as such, only enrolled people without disabilities.

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Shaiful, Ahmad Afiq Ahmad, Romiza Md Nor, and Huzaifah A Hamid. "Monitoring Electric Power Wheelchair Battery Consumption Level via Mobile." Journal of Computing Research and Innovation 5, no. 4 (November 2, 2020): 54–58. http://dx.doi.org/10.24191/jcrinn.v5i4.140.

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Nowadays, power wheelchair is one of the most important vehicles for people with physical disabilities such as paralysis, stroke, handicap and many more. Electric wheelchair which is also called electric - power wheelchair or powerchair can be moved by an el ectrically based power source, regularly motor or batteries. It is very important to have frequent monitoring battery level because power wheelchair need sufficient battery level for it to be moved around. Therefore, this project is developed to monitor th e battery consumption level and real time battery monitoring. Current sensor is used to measure the current state of the battery level. In this project, Internet of Things (IoT) concept is applied where sensor and mobile application is integrated and know n as BLife. Blife was designed using the visibility of the system status principles which consist of knowledge is power, appropriate feedback, compel user to action and communication creates trusts. If the battery is in the lower state, the power wheelcha ir users will be informed through mobile application via an indicator informing that it needs to be recharged. Moreover, the current location of the power wheelchair user is also notified to the users’ caretaker. Evaluation of Blife were conducted using fu nctionality and usability testing based on visibility of the system status technique. Most of the respondents are satisfied and gave positive feedback. This project is a great contribution to disable people who has limited access to charge battery and to a lert them on their battery level status.

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Terashima, Kazuhiko, Hideo Kitagawa, Takanori Miyoshi, Sou Kitamura, and Juan Urbano. "Neuro-Fuzzy Control of Power-Assist Omnidirectional Wheelchair Using Human-Friendly Touch Panel." Journal of Robotics and Mechatronics 21, no. 3 (June 20, 2009): 427–34. http://dx.doi.org/10.20965/jrm.2009.p0427.

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An omnidirectional power-assist wheelchair must be adaptable to needs of individual attendants. We modified our neuro-fuzzy controller to improve diagonal movements. We also developed an innovative touch panel interface providing easy real-time input and feedback. Experiments confirmed the wheelchair's adaptability to user needs.

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Ingram, Benjamin J., Shayne Gooch, Guy L. Borren, Andrew Jenkins, Caitlin Tromop van Dalen, and Jennifer Dunn. "Classification Efficiency in Wheelchair Rugby: Wheelchair Propulsion Power Analysis." IFAC Proceedings Volumes 47, no. 3 (2014): 4778–83. http://dx.doi.org/10.3182/20140824-6-za-1003.01959.

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Abdeselem, Chakar, Abdelkhalek Othmane, Gasbaoui Brahim, Soumeur Mohammed Amine, Hafsi Oussama, and Hartani Mohammed Amine. "Power management strategy based sugeno fuzzy logic rules in an electric wheelchair." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 2 (June 1, 2021): 1187. http://dx.doi.org/10.11591/ijpeds.v12.i2.pp1187-1195.

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Power management in multi-power supply electrical systems to manage the general system behavior is essential to improve autonomy and efficiency. In this paper, a proposed fuzzy-logic power management-based sugeno rule is applied in a hybrid PV/battery electric wheelchair to ameliorate the battery life cycle and the overall autonomy. Besides, the increment conductance INC MPPT is used to maximize PVpower. The electric wheelchair's general topology comprises photovoltaic energy resources as the main source and the battery energy storage system device as the auxiliary source. This hybrid power source system supplied the electric wheelchair composed two permanent magnet DC motors controlled by a PI controller. MATLAB/Simulink program is used to implement the overall control scheme. The simulation results that were obtained and the detailed study demonstrate the feasibility and performance of this intelligent strategy.

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McLaurin, C. A., and C. E. Brubaker. "Biomechanics and the wheelchair." Prosthetics and Orthotics International 15, no. 1 (April 1991): 24–37. http://dx.doi.org/10.3109/03093649109164272.

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Wheelchair biomechanics involves the study of how a wheelchair user imparts power to the wheels to achieve mobility. Because a wheelchair can coast, power input need not be continuous, but each power strike can be followed by a period of recovery, with the stroking frequency depending on user preferences and the coasting characteristics of the wheelchair. The latter is described in terms of rolling resistance, wind resistance and the slope of the surface. From these three factors the power required to propel the wheelchair is determined, and must be matched by the power output of the user. The efficiency of propulsion is the ratio of this power output to the metabolic cost and is typically in the order of 5% in normal use. The features required in a wheelchair depend upon user characteristics and intended activities. The ideal wheelchair for an individual will have the features that closely match these characteristics and activities. Thus prescription is not just choosing a wheelchair, but choosing the components of the wheelchair that best serve the intended purpose. In this paper, each component is examined for available options and how these options effect the performance of the wheelchair for the individual. The components include wheels, tyres, castors, frames, bearings, materials, construction details, seats, backrests, armrests, foot and legrests, headrests, wheel locks, running brakes, handrims, levers, accessories, adjustments and detachable parts. Each component is considered in relation to performance characteristics including rolling resistance, versatility, weight, comfort, stability, maneouvrability, transfer, stowage, durability and maintenance. Where they exist, wheelchair standards are referred to as a source of information regarding these characteristics.

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Nikpour, Mostafa, Loulin Huang, and Ahmed M. Al-Jumaily. "An Approach on Velocity and Stability Control of a Two-Wheeled Robotic Wheelchair." Applied Sciences 10, no. 18 (September 16, 2020): 6446. http://dx.doi.org/10.3390/app10186446.

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Conventional robotic wheelchairs (three or four-wheeled) which are statically stable are poor in mobility. Though a two-wheeled robotic wheelchair has better mobility, it is not statically stable and needs an active stability controller. In addition to mobility and stability, velocity control is also important for the operation of a wheelchair. Conventional stability and velocity controllers rely on the motion of the wheels and require high driving torque and power. In this paper, this problem is tackled by adding a compact pendulum-like movable mechanism whose main function is for stability control. Its motion and those of the wheels are controlled through a quasi-sliding mode control approach to achieve a simultaneous velocity and stability control with much less driving torque and power. Simulation results are presented to show the effectiveness of the proposed controller.

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Roeleveld, Karin, Eric Lute, Dirkjan Veeger, Luc van der Woude, and Tom Gwinn. "Power Output and Technique of Wheelchair Athletes." Adapted Physical Activity Quarterly 11, no. 1 (January 1994): 71–85. http://dx.doi.org/10.1123/apaq.11.1.71.

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To assess power output, force application, and kinematics of wheelchair propulsion in peak exercise, nine wheelchair athletes with medical lesion levels of T8 or lower performed a 30-s sprint test on a stationary wheelchair ergometer. Mean power output, calculated for the right wheel only, was 59.4 ± 8.5 W. The ratio between effective force and total propulsive force was 60 ± 6%. A negative torque around the hand and a not tangentially directed total force accounted for this low effectiveness. Since the subject group was highly trained, their technique was considered to be optimal for the given circumstances. Therefore, athletes who want to improve power output by increasing effectiveness should keep in mind the existence of a nontangential propulsive force and a braking torque applied by the hands onto the hand rim surface. It is likely that both aspects will be influenced by the geometry of the wheelchair, for example, hand rim dimension or seat position.

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Jones, Maria A., Irene R. McEwen, and Laura Hansen. "Use of Power Mobility for a Young Child With Spinal Muscular Atrophy." Physical Therapy 83, no. 3 (March 1, 2003): 253–62. http://dx.doi.org/10.1093/ptj/83.3.253.

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Abstract Background and Purpose. Young children with severe motor impairments, such as spinal muscular atrophy, are often unable to move around their environment independently; therefore, they may be at risk for delays in areas of development not directly related to their motor limitations. Power mobility is an intervention that provides young children a means of independent movement and enables them to independently explore their environment. Case Description. The participant was a 20-month-old girl with type II spinal muscular atrophy. Intervention. The authors provided the child with a power wheelchair and gave her mother and physical therapist general guidelines to encourage her use of the power wheelchair. Outcomes. Within 6 weeks after receiving the power wheelchair, the child operated the wheelchair independently. She showed developmental gains in all domains of the Battelle Developmental Inventory and the Pediatric Evaluation of Disability Inventory over 6 months. The authors conducted an interview with the child's mother before and after intervention. She reported that the child was more independent after receiving the power wheelchair. Discussion. The power wheelchair may have been associated with the changes in the child's mobility and her developmental changes over 6 months.

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Galkin, Ilya, Andrejs Podgornovs, Andrei Blinov, Kristaps Vitols, Maxim Vorobyov, and Roman Kosenko. "Considerations regarding the concept of cost-effective power-assist wheelchair subsystems." Electrical, Control and Communication Engineering 14, no. 1 (July 1, 2018): 71–80. http://dx.doi.org/10.2478/ecce-2018-0008.

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Abstract The present paper deals with the concept of a cost-effective power-assistant wheelchair. An analysis of the market situation and recent technical achievements is done at the beginning. On its basis, a set of solutions suitable for the development of such wheelchairs has been composed. It is shown that the key features of the considered concept are: segmented electrical motor and drive, sectioned battery pack, modular charger and an ANN matrix that provides easy and intuitive interfacing of sensor networks, pseudo-bionic feedbacks and the decision-making unit. Within the scope of the paper, a 3D model has been developed and 3D modelling has been conducted. As a result, certain drawbacks in the design and placement of elements have been found and a modification of the concept has been proposed

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Barfield, JP, Laura Newsome, and Laurie A. Malone. "Energy Expenditure during Power Wheelchair Soccer." Medicine & Science in Sports & Exercise 48 (May 2016): 510. http://dx.doi.org/10.1249/01.mss.0000486535.11388.1d.

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FRIEDEN, JOYCE. "Medicare Revises Power Wheelchair Payment Rule." Family Practice News 35, no. 19 (October 2005): 91. http://dx.doi.org/10.1016/s0300-7073(05)71918-6.

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van der Woude, Lucas H. V., D. Drexhage, and H. E. J. Veeger. "Peak Power Production in Wheelchair Propulsion." Clinical Journal of Sport Medicine 4, no. 1 (January 1994): 14–24. http://dx.doi.org/10.1097/00042752-199401000-00003.

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Barfield, J. P., Laura Newsome, and Laurie A. Malone. "Exercise Intensity During Power Wheelchair Soccer." Archives of Physical Medicine and Rehabilitation 97, no. 11 (November 2016): 1938–44. http://dx.doi.org/10.1016/j.apmr.2016.05.012.

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Veeger, H. E. J., L. H. W. van der Woude, D. Drexhage, and J. Koperdraat. "Peak power output in wheelchair sprinting." Journal of Biomechanics 22, no. 10 (January 1989): 1093. http://dx.doi.org/10.1016/0021-9290(89)90494-6.

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Sakakibara, Brodie M., William C. Miller, Paula W. Rushton, and Jan Miller Polgar. "Rasch Analyses of the Wheelchair Use Confidence Scale for Power Wheelchair Users." Archives of Physical Medicine and Rehabilitation 99, no. 1 (January 2018): 17–25. http://dx.doi.org/10.1016/j.apmr.2017.09.004.

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Sharmila, A., Ankur Saini, Shubham Choudhary, T. Yuvaraja, and S. G. Rahul. "Solar Powered Multi-Controlled Smart Wheelchair for Disabled: Development and Features." Journal of Computational and Theoretical Nanoscience 16, no. 11 (November 1, 2019): 4889–900. http://dx.doi.org/10.1166/jctn.2019.8401.

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As per the report presented by the World Health Organization, it is well aware that 15% of the total world’s population is physically challenged. Accessibility of health care services is limited to people with physical disabilities. The utilization of battery powered wheelchairs with excellent navigational capabilities is one of the extraordinary strides towards the incorporation of severely physically and mentally challenged people. Motion, movement and localization are significant issues for the blind, paraplegic and handicapped people who are accompanied by eminent tiresome work. There exist different systems to override the problems described, allowing the end-user to perform safe movements and complete certain daily life tasks. Considering the said issues as a motivation, this work presents the design and development of Solar Powered Multi-Controller Smart Wheelchair. The developed smart wheelchair uses eye blink sensor to steer the wheelchair for quadriplegia patient along with Joystick and Keypad module for several kinds of disabilities. In addition, more liberty is provided to the disabled person by using additional sensors such as heartbeat sensor and a temperature sensor which continuously monitors the health condition of the patient. Additionally, a urine level indicator is also used to avoid inconvenience to the patient. If the patient falls down along with a wheelchair, a fall detection system in the wheelchair detects the same. All the detail can be shared with hospital staff and the patient’s guardian during a contingency condition, so that the staffs and guardians can take immediate actions. The safety of the patient and the wheelchair with respect to the incorporation of solar power is highly given priority during this system design.

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Hutzler, Yeshayahu, Yves Vanlandewijck, and Monica Van Vlierberghe. "Anaerobic Performance of Older Female and Male Wheelchair Basketball Players on a Mobile Wheelchair Ergometer." Adapted Physical Activity Quarterly 17, no. 4 (October 2000): 450–65. http://dx.doi.org/10.1123/apaq.17.4.450.

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The purpose was to compare the anaerobic performance of male and female wheelchair basketball players in the 30-s Wingate Anaerobic Test (WAnT), performed on a mobile wheelchair ergometer. Participants were 10 female and 10 male wheelchair basketball players, aged 39 to 56, from a provincial wheelchair basketball team. Variables measured included peak and mean velocity and power, as well as the fatigue indices. Test-retest reliability, based on 13 participants (7 males and 6 females), ranged from .88 to .95 for peak and mean power and velocity variables and from .40 to .62 for the fatigue indices. Findings for the sample of 20 indicated that (a) males had significantly higher peak and mean velocity and power than females, and (b) females had significantly higher velocity fatigue indices than males.

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Cai, Deng Chuan. "A Wheelchair Design for the Elderly with Small Strength." Applied Mechanics and Materials 590 (June 2014): 566–70. http://dx.doi.org/10.4028/www.scientific.net/amm.590.566.

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WHO reports the world population is rapidly ageing. The number of people aged 60 years and over is expected to 2 billion. The muscle strength of the elderly was decreased the ability of movement was therefore limited. Designing a facility to facilitate assist elderly for transportation is important and required. This study aims to propose a leverage wheelchair for the elderly. A serial design procedure including concept design, mechanism design, ergonomic design, and appearance design were performed in the study to create the new product. Finally, a leverage wheelchair was then proposed with following features: (1) the appearance of the leverage wheelchair demonstrated a powerful and friendly image; (2) the power transfer mechanism is designed with a power transfer mechanism which enables user to move wheelchair with a small strength; (3) the cover of the power transfer mechanism is an protection and visual element for the wheelchair; (4) the handlebar was designed with a power-saving mechanism to facilitate the elderly to move the wheelchair. It is also designed to assist user to stand up easily, (5) the handlebar was design at a position where the user can operate easily and comfortably; (6) a control button was deigned to control wheelchair going forward or backward; (7) the push handle was designed for fitting the hand of the caregiver. The results of design works, the methods and procedure used in this study can be a reference for product design and development.

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Archambault, Philippe, Dany Gagnon, François Routhier, and William Miller. "Effectiveness of power wheelchair simulator training, delivered at home, on wheelchair driving skills." Annals of Physical and Rehabilitation Medicine 59 (September 2016): e37-e38. http://dx.doi.org/10.1016/j.rehab.2016.07.087.

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Maule, Luca, Alessandro Luchetti, Matteo Zanetti, Paolo Tomasin, Marco Pertile, Mattia Tavernini, Giovanni M. A. Guandalini, and Mariolino De Cecco. "RoboEye, an Efficient, Reliable and Safe Semi-Autonomous Gaze Driven Wheelchair for Domestic Use." Technologies 9, no. 1 (February 24, 2021): 16. http://dx.doi.org/10.3390/technologies9010016.

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Any severe motor disability is a condition that limits the ability to interact with the environment, even the domestic one, caused by the loss of control over one’s mobility. This work presents RoboEYE, a power wheelchair designed to allow users to move easily and autonomously within their homes. To achieve this goal, an innovative, cost-effective and user-friendly control system was designed, in which a non-invasive eye tracker, a monitor, and a 3D camera represent some of the core elements. RoboEYE integrates functionalities from the mobile robotics field into a standard power wheelchair, with the main advantage of providing the user with two driving options and comfortable navigation. The most intuitive and direct modality foresees the continuous control of frontal and angular wheelchair velocities by gazing at different areas of the monitor. The second, semi-autonomous modality allows navigation toward a selected point in the environment by just pointing and activating the wished destination while the system autonomously plans and follows the trajectory that brings the wheelchair to that point. The purpose of this work was to develop the control structure and driving interface designs of the aforementioned driving modalities taking into account also uncertainties in gaze detection and other sources of uncertainty related to the components to ensure user safety. Furthermore, the driving modalities, in particular the semi-autonomous one, were modeled and qualified through numerical simulations and experimental verification by testing volunteers, who are regular users of standard electric wheelchairs, to verify the efficiency, reliability and safety of the proposed system for domestic use. RoboEYE resulted suitable for environments with narrow passages wider than 1 m, which is comparable with a standard domestic door and due to its properties with large commercialization potential.

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KAKIMOTO, Akira, Akio FUNAKUBO, Shigenobu SUZUKI, and Yukio SEKIGUCHI. "Development of Wheelchair with Assistive Power Unit." Journal of Life Support Technology 6, no. 3 (1994): 17–26. http://dx.doi.org/10.5136/lifesupport1986.6.3_17.

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Archambault, Philippe S., Stéphanie Tremblay, Sarah Cachecho, François Routhier, and Patrick Boissy. "Driving performance in a power wheelchair simulator." Disability and Rehabilitation: Assistive Technology 7, no. 3 (October 24, 2011): 226–33. http://dx.doi.org/10.3109/17483107.2011.625072.

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KAKIMOTO, Akira, Hideo MATSUDA, and Yukio SEKIGUCHI. "Development of Power-Assisted Attendant-Propelled Wheelchair." Journal of the Japan Society for Precision Engineering 65, no. 8 (1999): 1126–30. http://dx.doi.org/10.2493/jjspe.65.1126.

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Hunt, A. K. "Power Wheelchair Adaptations for Respirator-Dependent Patients." Cardiopulmonary Physical Therapy Journal 2, no. 2 (1991): 17. http://dx.doi.org/10.1097/01823246-199102020-00017.

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Lin, Jzau Sgeng, and Sun Ming Huang. "An FPGA-Based Brain-Computer Interface for Wireless Electric Wheelchairs." Applied Mechanics and Materials 284-287 (January 2013): 1616–21. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1616.

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A wireless EEG-based brain-computer interface (BCI) and an FPGA-based system to control electric wheelchairs through a Bluetooth interface was proposed in this paper for paralyzed patients. Paralytic patients can not move freely and only use wheelchairs in their daily life. Especially, people getting motor neuron disease (MND) can only use their eyes and brain to exercise their willpower. Therefore, real-time EEG and winking signals can help these patients effectively. However, current BCI systems are usually complex and have to send the brain waves to a personal computer or a single-chip microcontroller to process the EEG signals. In this paper, a simple BCI system with two channels and an FPGA-based circuit for controlling DC motor can help paralytic patients easily to drive the electric wheelchair. The proposed BCI system consists of a wireless physiological with two-channel acquisition module and an FPGA-based signal processing unit. Here, the physiological signal acquisition module and signal processing unit were designed for extracting EEG and winking signals from brain waves which can directly transformed into control signals to drive the electric wheelchairs. The advantages of the proposed BCI system are low power consumption and compact size so that the system can be suitable for the paralytic patients. The experimental results showed feasible action for the proposed BCI system and drive circuit with a practical operating in electric wheelchair applications.

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Peers, Danielle, and Lindsay Eales. "Moving Materiality: People, Tools, and this Thing Called Disability." Art/Research International: A Transdisciplinary Journal 2, no. 2 (August 23, 2017): 101. http://dx.doi.org/10.18432/r2js8w.

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This body is wheelchair-bound. Not in the sense of the ableist idiom, but literally: bound to a nine-pound titanium frame through Velcro and ratchet straps ripped from snowboards. This wheelchair is body-bound, bound to the flick of a hip against strapping, pulling through plastic and metal and rubber and gravity and wood, into a tilt onto one wheel. This metal, this flesh, this materiality is bound, too, by rhythm and soundscape: chairs crashing; prodding questions; polite onlookers, silent; the percussive thud of wheels on uneven terrain. It is bound to the gaze of audience and reader and performer and lover. It is bound with the discourses of (dis)ability, in(ter)dependence, materiality and boundedness. This essay too, is wheelchair-body-bound. It is bound to explorations of previous works on the practices, discourses, and materialities of the wheelchair. It is bound by the authors’ personal narratives of living, playing, moving and thinking with, in and through various wheelchairs and other technologies of (im)mobility. It is bound through critical artistic engagement: bound with thinking and, literally, dancing through the ways that flesh-chair-discourse-power bind in the form of a subject, or an articulation, or an assemblage. Finally, this essay is bound through an unabashed and unbounded passion for the exploration of the local, specific, strategic, accidental, and creative ways that one may remake or even re-imagine the bonding of their tools, communities, ideas, bodies, and mobilities.

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Ueno, Yuki, Hideo Kitagawa, Kiyoaki Kakihara, Toshio Sakakibara, and Kazuhiko Terashima. "Development of an Innovative Power-Assist Omni-Directional Mobile Bed Considering Operator’s Characteristics." International Journal of Automation Technology 8, no. 3 (May 5, 2014): 490–99. http://dx.doi.org/10.20965/ijat.2014.p0490.

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In welfare facilities, although wheelchairs are commonly used for transferring patients, there are many cases in which patients are transferred while lying on beds because it is burdensome for caregivers to move a patient from a bed to a wheelchair. However, the task of moving a bed with a patient lying on it is still physically burdensome for caregivers. Hence in this study, we developed a power-assist omni-directional mobile bed to reduce the burden associated with this task. This paper reports a novel prototype of the omnidirectional power-assist bed and describes the prototype’s design, mechanism and control-system configuration. In addition, we report on experiments that were conducted to verify the effectiveness and usefulness of the omni-directional mobile bed, as well as the adaptability of the omni-directional power-assist system.

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Nguyen, Cuong V., Minh T. Nguyen, Toan V. Quyen, Anh M. Le, Antonino Masaracchia, Ha T. Nguyen, Huy P. Nguyen, Long D. Nguyen, Hoa T. Nguyen, and Vinh Q. Nguyen. "Hybrid Solar-RF Energy Harvesting Systems for Electric Operated Wheelchairs." Electronics 9, no. 5 (May 2, 2020): 752. http://dx.doi.org/10.3390/electronics9050752.

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Over the decades, with the advancement of science and technology, wheelchairs have undergone remarkable changes, such as controlling an electrical wheelchair by using brain signals. However, existing electrical wheelchairs still need improvements in terms of energy management. This paper proposes an hybrid Solar-Radio frequency (RF) harvesting system able to supply power for the continuous and effective operation of electrically powered wheelchairs. This system can simultaneously harvest power from RF and solar source that are both available in the surrounding environment. A maximum power point tracking (MPPT) and a boost converter are exclusively employed for the standalone solar system while the standalone RF system is equipped with a 9-stage voltage multiplier (VM). The voltage level for the charging process is obtained by adding the output voltage of each source. In addition, a current booster and a stabilizer are used to reach the required level of current and pin the charging voltage to a stable level, respectively. Simulation results show how the hybrid system is better and more stable when the boost current and stabilizer are used in the charging system. Moreover, we also provide some analytic results to prove the advantages of this system.

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Best, Krista L., R. Lee Kirby, Cher Smith, and Donald A. Macleod. "Comparison between performance with a pushrim-activated power-assisted wheelchair and a manual wheelchair on the Wheelchair Skills Test." Disability and Rehabilitation 28, no. 4 (January 2006): 213–20. http://dx.doi.org/10.1080/09638280500158448.

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Ferreira, Sandra Aires, William Cordeiro de Souza, Matheus Amarante do Nascimento, Marcus Peikriszwili Tartaruga, Bruno Sergio Portela, Luis Paulo Gomes Mascarenhas, and Marcos Roberto Queiroga. "Características morfológicas, desempenho de força e de potência anaeróbia em jogadores de basquetebol em cadeira de rodas." Brazilian Journal of Kinanthropometry and Human Performance 19, no. 3 (August 24, 2017): 343. http://dx.doi.org/10.5007/1980-0037.2017v19n3p343.

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The aim of this study was to provide a descriptive analysis of the morphological structure, muscle strength, and anaerobic power performance of the upper limbs of wheelchair basketball athletes. Eleven male players (33.2 ± 10.6 years, 71.8 ± 15.8 kg) were submitted to anthropometric measurements and dynamometry (kg), medicine ball throwing (m) and wingate arm tests (W). he results showed sitting height (79.7 ± 4.6 cm), relative body fat (20.7 ± 7.6%), handgrip strength and explosive muscle strength (50.1 ± 10.6 kg and 3.9 ± 1.1 m, respectively), as well as peak power (316.8 ± 126.2 W), mean power (160.5 ± 76.5 W) and fatigue index (50.4%) lower than the performance of other wheelchair basketball athletes. he morphological characteristics and performance of athletes in the present study suggest disadvantages when compared to other wheelchair basketball athletes.

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Yang, Rong, Li Wang, Xiu Feng Zhang, and Yan Ma. "Design of a Switching Power Supply for Wheelchair Controller Based on Magnetic Isolation Technology." Advanced Materials Research 1037 (October 2014): 299–302. http://dx.doi.org/10.4028/www.scientific.net/amr.1037.299.

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This paper analyzes the principle and advantages of magnetic isolation feedback technology. And an effective method of 5W switching power supply, which can be used for controller of electrically powered wheelchair, is introduced. The main circuit is verified on the DC motor driver module of a wheelchair controller PGDT VR2. The experimental results show that the circuit works stably and can meet the design requirements.

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Mumbaikar, Harshal, and Guga Priya. "Gpad and Fuzzy Logic based Assistance System for Disabled People." International Journal of Engineering & Technology 7, no. 3.34 (September 1, 2018): 21. http://dx.doi.org/10.14419/ijet.v7i3.34.18708.

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This paper presents an assistance system for differentially abled people. It consists of Fuzzy logic control system and GpaD hand gesture technique to provide smooth and automatic control of the wheelchair in the presence of obstacles. The ultrasonic sensor is used for detecting obstacles. Actions in forward, reverse, right and left directions are taken care by GpaD which is based on IR sensor. Fuzzy logic controls the breaking power. The breaking power is based on the speed of the wheelchair and the distance between the wheelchair and an obstacle. The main purpose of this paper is to improve the safety of the differentially abled people and can be supervised from long distances without anybody’s help.

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Currier, Beth A., Maria A. Jones, and Beth W. DeGrace. "Experiences of Families With Young Power Wheelchair Users." Journal of Early Intervention 41, no. 2 (January 10, 2019): 125–40. http://dx.doi.org/10.1177/1053815118819204.

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Independent mobility in typically developing infants and young children has been linked to growth in many areas of child development and changes in family behavior and interaction. Research suggests similar benefits in young children with motor disability who use powered mobility. The purpose of this study was to gain an understanding of how families experienced their child’s development, growth, and abilities after using a power wheelchair for 1 year with the intent to generate a preliminary model to capture the process and relationships among these experiences. Eight families participated in interviews, and using grounded theory methodology the research team investigated their experiences. Results informed the development of the preliminary model that framed three key themes: (a) child competence, (b) parenting experience, and (c) the influence of power wheelchair use along with the key category It will help in the long run that titled and anchored the model. This model provides a possible view into how the use of powered mobility may influence development by supporting both child competence and the parenting experience.

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Lin, Yang-Hua, Chung-Hsien Kuo, How-Hing Ng, Wen-Yu Liu, and Hen-Yu Lien. "Bimanual gliding control for indoor power wheelchair driving." Journal of Rehabilitation Research and Development 50, no. 3 (2013): 357. http://dx.doi.org/10.1682/jrrd.2011.12.0230.

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FUJIIE, Kaoru. "Measuring system of power output of wheelchair locomotion." Annals of physiological anthropology 4, no. 3 (1985): 253–56. http://dx.doi.org/10.2114/ahs1983.4.253.

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Lee, Kyung-min, Chang-Hyuk Lee, Soonwook Hwang, Jiwon Choi, and Young-bong Bang. "Power-Assisted Wheelchair With Gravity and Friction Compensation." IEEE Transactions on Industrial Electronics 63, no. 4 (April 2016): 2203–11. http://dx.doi.org/10.1109/tie.2016.2514357.

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Devigne, Louise, Marco Aggravi, Morgane Bivaud, Nathan Balix, Catalin Stefan Teodorescu, Tom Carlson, Tom Spreters, Claudio Pacchierotti, and Marie Babel. "Power Wheelchair Navigation Assistance Using Wearable Vibrotactile Haptics." IEEE Transactions on Haptics 13, no. 1 (January 1, 2020): 52–58. http://dx.doi.org/10.1109/toh.2019.2963831.

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Journal articles on the topic 'Power wheelchair'

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