Journal articles on the topic 'Wheelchair'
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1
Muhammad Nur Iksan, Muhammad, and Anita Susilawati. "Design of a Multi-Functional Wheelchair Based Fuzzy Analytical Hierarchy Process." Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) 65, no. 1 (March 29, 2021): 8–13. http://dx.doi.org/10.36842/jomase.v65i1.229.
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Wheelchairs are tools for humans who experience illness, disabilities, and injuries that cause walking difficulties. There are many types of wheelchairs on the market, while wheelchairs that function to help users defecate flexibly have not been widely sold in the market. Therefore, it is necessary to develop a flexible and multifunctional wheelchair that can assist the users in carrying out their activities. This study aims to develop a design of the multifunctional wheelchair. The designing of multifunctional wheelchair based the FAHP (Fuzzy Analytical Hierarchy Process) method. The use of the FAHP was to select the optimal design and selection of the best alternatives among wheelchair’s indicators of design proposed. The results of calculation of weight values for wheelchair design were obtained a percentage of alternative 1 of 48% and alternative 2 of 52%.
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Chénier, Félix, and Rachid Aissaoui. "Effect of Wheelchair Frame Material on Users’ Mechanical Work and Transmitted Vibration." BioMed Research International 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/609369.
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Wheelchair propulsion exposes the user to a high risk of shoulder injury and to whole-body vibration that exceeds recommendations of ISO 2631-1:1997. Reducing the mechanical work required to travel a given distance (WN-WPM, weight-normalized work-per-meter) can help reduce the risk of shoulder injury, while reducing the vibration transmissibility (VT) of the wheelchair frame can reduce whole-body vibration. New materials such as titanium and carbon are used in today’s wheelchairs and are advertised to improve both parameters, but current knowledge on this matter is limited. In this study, WN-WPM and VT were measured simultaneously and compared between six folding wheelchairs (1 titanium, 1 carbon, and 4 aluminium). Ten able-bodied users propelled the six wheelchairs on three ground surfaces. Although no significant difference of WN-WPM was found between wheelchairsP<0.1, significant differences of VT were foundP<0.05. The carbon wheelchair had the lowest VT. Contrarily to current belief, the titanium wheelchair VT was similar to aluminium wheelchairs. A negative correlation between VT and WN-WPM was found, which means that reducing VT may be at the expense of increasing WN-WPM. Based on our results, use of carbon in wheelchair construction seems promising to reduce VT without increasing WN-WPM.
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Meng, Qiaoling, Mingpeng Jiang, Zongqi Jiao, and Hongliu Yu. "Bionic design and analysis of a multi-posture wheelchair." Mechanical Sciences 13, no. 1 (January 7, 2022): 1–13. http://dx.doi.org/10.5194/ms-13-1-2022.
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Abstract. Posture transformation is an essential function for multi-posture wheelchairs. To improve the natural motion in posture transformation that is a popular problem in the design of multi-posture wheelchairs because the current wheelchair's posture transformation mechanism cannot remain consistent between the rotation center of the wheelchair and the rotation center of the human body joints. This paper proposes a sitting–standing–lying three-posture bionic transformation mechanism for a smart wheelchair. A human–wheelchair coupling model is described and analyzed according to the biomechanical characteristics of the posture transformation of human beings and their functional requirements. The configuration of the transformation mechanism is chosen by comparing the trails of the wheelchair rotation centers and the corresponding human joint rotation centers. The kinematics of the optimized configuration are discussed in detail to obtain the most bionic motion performance using the multivariable nonlinear constraint optimization algorithm. Finally, the mechanism is designed, and its posture transformation performance is simulated and verified using Adams (Automatic Dynamic Analysis of Mechanical Systems) software.
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Jipp, Meike. "Individual Differences and Their Impact on the Safety and the Efficiency of Human-Wheelchair Systems." Human Factors: The Journal of the Human Factors and Ergonomics Society 54, no. 6 (April 25, 2012): 1075–86. http://dx.doi.org/10.1177/0018720812443826.
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Objective: The extent to which individual differences in fine motor abilities affect indoor safety and efficiency of human-wheelchair systems was examined. Background: To reduce the currently large number of indoor wheelchair accidents, assistance systems with a high level of automation were developed. It was proposed to adapt the wheelchair’s level of automation to the user’s ability to steer the device to avoid drawbacks of highly automated wheelchairs. The state of the art, however, lacks an empirical identification of those abilities. Method: A study with 23 participants is described. The participants drove through various sections of a course with a powered wheelchair. Repeatedly measured criteria were safety (numbers of collisions) and efficiency (times required for reaching goals). As covariates, the participants’ fine motor abilities were assessed. Results: A random coefficient modeling approach was conducted to analyze the data, which were available on two levels as course sections were nested within participants. The participants’ aiming, precision, and arm–hand speed contributed significantly to both criteria: Participants with lower fine motor abilities had more collisions and required more time for reaching goals. Conclusion: Adapting the wheelchair’s level of automation to these fine motor abilities can improve indoor safety and efficiency. In addition, the results highlight the need to further examine the impact of individual differences on the design of automation features for powered wheelchairs as well as other applications of automation. Application: The results facilitate the improvement of current wheelchair technology.
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Yasuda, Toshihiko, Hajime Tanaka, Kazushi Nakamura, and Katsuyuki Tanaka. "Adjustability of Neural Networks with Variant Connection Weights for Obstacle Avoidance in an Intelligent Wheelchair." Journal of Advanced Computational Intelligence and Intelligent Informatics 11, no. 8 (October 20, 2007): 922–30. http://dx.doi.org/10.20965/jaciii.2007.p0922.
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We have been studying electrically powered wheelchair operation to make electrically powered wheelchair intelligent and to develop a mobility aid for those who find it difficult or impossible to use conventional electrically powered wheelchairs. Some of the prototypes we have developed use neural networks providing obstacle avoidance. In previous research, we found that by varying neural network connection weight based on obstacles in the wheelchair’s vicinity and its run state, obstacle avoidance is improved. In this research, we discuss the adjustability of neural networks with variant connection weight based on numerical studies.
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Hryciów, Zdzisław. "The safety of wheelchair occupants in motor vehicles." Archives of Automotive Engineering – Archiwum Motoryzacji 97, no. 3 (October 5, 2022): 5–13. http://dx.doi.org/10.14669/am/155001.
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Ensuring the free movement of disabled people, including the use of vehicles, is a fundamental right. Therefore, efforts should be made to draw up standards regulating both organisational and technical aspects related to the construction and testing of wheelchairs. The main purpose of the paper is a review the literature related to wheelchair transport safety and the current standards for wheelchair crash testing Wheelchair users must securely and safely attach their wheelchair to the vehicle when travelling. The most common methods include securing with a four-belt system or using docking systems. Docking systems allow the disabled person to restrain the wheelchair themselves. Their main limitation is the lack of standardisation. Issues related to in-vehicle wheelchair design and testing are mainly described in international ISO standards and, in the US, in ANSI standards. Not all wheelchairs are crash tested. Before using wheelchairs, it should be checked if they can be mounted in a car. An important issue is education of wheelchair users and their carers on proper wheelchair securing. Even when wheelchairs are effectively secured, occupants in wheelchairs could be seriously and fatally injured because of improperly used and positioned belt restraints.
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Conceição Rocha de Oliveira, Paula, Luciana Ramos Baleotti, Gustavo Christofoletti, and Fausto Orsi Medola. "A study of wheelchair, movement and environmental factors associated with concerns about falls among wheelchairs users." Technology and Disability 35, no. 4 (December 27, 2023): 245–54. http://dx.doi.org/10.3233/tad-230004.
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BACKGROUND: Falls when using wheelchairs can have serious consequences for users. OBJECTIVE: The aim of this study was to investigate wheelchair types, daily movement and environmental factors associated with concerns about falls among wheelchair users. METHODS: Fifty-two wheelchair users (36 male and 16 female, mean age of 44.3 ± 10 years) were interviewed online and responded to questions about the characteristics of their wheelchair, their experiences and concerns about falling while using their wheelchair. RESULTS: It was found that the highest levels of concern about falling when using wheelchairs were associated with the use of rigid frame wheelchairs; and with activities such as moving on sidewalks and ramps. Half of the sample reported that they did not receive training on wheelchair usage and had concerns about performing wheelie maneuvers. Reported falls caused by wheelchair failure were associated with increased concerns about falls. CONCLUSIONS: The findings of this study suggest that wheelchair type, daily movements and environments all influence wheelchair users’ concerns about falls.
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Yang, Laijun, Nan Guo, Ryota Sakamoto, Norihiko Kato, and Ken’ichi Yano. "Electric Wheelchair Hybrid Operating System Coordinated with Working Range of a Robotic Arm." Journal of Robotics and Control (JRC) 3, no. 5 (September 1, 2022): 679–89. http://dx.doi.org/10.18196/jrc.v3i5.15944.
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Electric wheelchair-mounted robotic arms can help patients with disabilities to perform their activities in daily living (ADL). Joysticks or keypads are commonly used as the operating interface of Wheelchair-mounted robotic arms. Under different scenarios, some patients with upper limb disabilities such as finger contracture cannot operate such interfaces smoothly. Recently, manual interfaces for different symptoms to operate the wheelchair-mounted robotic arms are being developed. However, the stop the wheelchairs in an appropriate position for the robotic arm grasping task is still not easy. To reduce the individual’s burden in operating wheelchair in narrow spaces and to ensure that the chair always stops within the working range of a robotic arm, we propose here an operating system for an electric wheelchair that can automatically drive itself to within the working range of a robotic arm by capturing the position of an AR marker via a chair-mounted camera. Meanwhile, the system includes an error correction model to correct the wheelchair’s moving error. Finally, we demonstrate the effectiveness of the proposed system by running the wheelchair and simulating the robotic arm through several courses.
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Gowran, Rosemary Joan, Nathan Bray, Mary Goldberg, Paula Rushton, Marie Barhouche Abou Saab, David Constantine, Ritu Ghosh, and Jonathan Pearlman. "Understanding the Global Challenges to Accessing Appropriate Wheelchairs: Position Paper." International Journal of Environmental Research and Public Health 18, no. 7 (March 24, 2021): 3338. http://dx.doi.org/10.3390/ijerph18073338.
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Introduction: Appropriate wheelchairs are often essential for the health and wellbeing of people with mobility impairments to enhance fundamental freedoms and equal opportunity. To date, provision has mainly focused on just delivering the wheelchair instead of following an evidence-based wheelchair service delivery process. In addition, many governments have not committed to a national wheelchair provision policy. Approach: To prepare this position paper, a systemic development model, founded on the sustainable human security paradigm, was employed to explore the global challenges to accessing appropriate wheelchairs. Positions: I: Consideration of key perspectives of wheelchair provision across the life course is essential to meet the needs to children, adults, older people and their families; II: Comprehensive wheelchair service delivery processes and a competent workforce are essential to ensure appropriate wheelchair service provision; III: Evaluations on wheelchair product quality development, performance and procurement standards are key as wheelchair product quality is generally poor; IV: Understanding the economic landscape when providing wheelchairs is critical. Wheelchair funding systems vary across jurisdictions; V: Establishing wheelchair provision policy is a key priority, as specific policy is limited globally. Conclusion: The vision is to take positive action to develop appropriate and sustainable wheelchair service provision systems globally, for me, for you, for us.
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Wang, Yong Tai, Randy Bernard, Clint Cope, Li-Shan Chang, Weerawat Limroongreungrat, and Stephen Sprigle. "Fundamental Locomotive Activity Time Efficiency with Differently Positioning Drive-Axis Wheelchairs Among Elders." Adapted Physical Activity Quarterly 25, no. 4 (October 2008): 322–34. http://dx.doi.org/10.1123/apaq.25.4.322.
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This study examined time efficiency in wheelchair locomotive activities among four different wheelchairs propelled by elders with arms and/or legs. Sixteen elder manual wheelchair users propelled her/his own wheelchair and three wheelchairs (the main drive-axis wheels positioning in front, middle, and rear, respectively) in the test of seven wheelchair locomotive activities of daily living. A Mixed-Model ANOVA and Bonferroni post hoc test (p < .05) were employed to determine the time efficiency among four wheelchairs and three groups. The results demonstrated better time efficiency resulted from propelling the mid drive-axis and/or rear drive-axis wheelchairs; using arms and legs simultaneously propelling wheelchairs was more time efficient than using the arms or legs only in the selected locomotive activities.
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Waga, Takeshi, Soichiro Ura, Masahito Nagamori, Hisashi Uchiyama, and Akira Shionoya. "Influence of Material on Wheelchair Vibrations." Proceedings 49, no. 1 (June 15, 2020): 127. http://dx.doi.org/10.3390/proceedings2020049127.
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Wheelchair sports have a tendency to depend on the performance of wheelchairs, and the weight reduction of wheelchairs made of various alloys has helped improve the performance of players. Some players have mentioned, however, that the operability and riding comfort of competition wheelchair have been affected by changing the wheelchair materials; stiffness and weight are considered to be related to operability and riding comfort. In this experiment, we installed some weights on the center of the mass of a competitive wheelchair made of magnesium alloy to be the same mass of a wheelchair made of aluminum alloy; vibrations that occurred on both wheelchairs while driving were measured and compared. The experiment was performed using 3-axis sensors. This experiment showed that the vibration frequency of the wheelchair made of magnesium alloy was different from that made of aluminum alloy. This result was thought to be influenced by the difference in Young’s modulus or the specific weight.
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Lee, Young Shin, Ki Du Lee, and Hyun Kyoon Lim. "The Safety Assessment of Wheelchair Occupants in Road Passenger Vehicles in a Frontal Crash: A Computer Simulation." Key Engineering Materials 353-358 (September 2007): 2569–72. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2569.
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With the increasing needs of the more convenient transportation, wheelchairs are often used by people with mobility disabilities and the elderly people. However, as wheelchairs are primarily designed for the mobility assistive devices, not for the vehicle seats, wheelchair users are exposed to risk factors for neck and upper body injury caused by automobile accidents. In this paper, in accordance with the ANSI/RESNA WC-19, a fixed vehicle mounted wheelchair occupant restraint system (FWORS), wheelchair integrated restraint system (WIRS), and wheelchair integrated x-bend restraint system (WIXRS) are evaluated using computer simulations for the case when a wheelchair is subjected to the frontal impact (20 g, 48 km/h).
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Stewart, C. P. U., D. A. Carus, and G. Kerr. "Development of a universal wheelchair narrower." Prosthetics and Orthotics International 13, no. 1 (April 1989): 39–41. http://dx.doi.org/10.3109/03093648909079409.
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A wheelchair user's mobility may be hampered by narrow doorways and restricted turning spaces. Mobility may be improved by undertaking expensive building alterations in the wheelchair user's own home and work environment. However, other environments, including modes of public transport, may still present considerable difficulties. One way of improving mobility is to reduce the overall width of a wheelchair with the occupant still seated within it. This is achieved by using a clamp, known as a “wheelchair narrower” which can be fitted and operated either by the wheelchair user or an attendant. The narrower takes advantage of the inherent design of a wheelchair which permits folding for storage. A universal wheelchair narrower was manufactured and tested at Tayside Rehabilitation Engineering Services. It was designed to be used on 69% of wheelchairs issued through the National Health Service in Scotland. Tests revealed that wheelchairs could be narrowed by between 38 and 127. mm depending upon the type of wheelchair. Active wheelchair users reported that the device was particularly useful when travelling.
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Michalikova, Monika, Lucia Bednarcikova, Jana Demeterova, and Jozef Zivcak. "Personalized modification of sport dance wheelchairs." Acta Tecnología 09, no. 04 (December 31, 2023): 115–19. http://dx.doi.org/10.22306/atec.v9i4.180.
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Standard modifications of active wheelchairs are commonly performed, but they often do not take into account the individual needs of dancers. The presented article aims to propose the optimization and personalization of the Quickie Argon Ti dance wheelchair for a specific subject. A visualization of a personalized dance wheelchair was created, abiding by the dimensional frame. The quality of the performance of physically disabled individuals in sports dancing on wheelchairs is significantly influenced by its construction and parameters. In this article, a standard sports wheelchair, and the requirements placed on a sports wheelchair used for dancing were described. After addressing the shortcomings, the modifications of selected components of the disabled sports wheelchair were presented.
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Rotier, Dorian, Xiaodong Zhang, Qian Guo, and Liang Yuan. "Research on Brain Control Technology for Wheelchair." MATEC Web of Conferences 232 (2018): 03056. http://dx.doi.org/10.1051/matecconf/201823203056.
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This paper proposes a portable brain-computer interface paradigm and builds a portable brain-computer interface device suitable for brain-controlled wheelchairs. According to the characteristics of E-motiv EPOC equipment and its collected EEG, the hardware system of brain-controlled wheelchair was developed, and a real-time detection system of brain-controlled technology was built, which is used to collect EEG signals in real time to realize the wheelchair's motion control. Experimental results show that the accuracy of EEG control can meet the engineering application requirements.
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White, Elizabeth, and Bill Lemmer. "Effectiveness in Wheelchair Service Provision." British Journal of Occupational Therapy 61, no. 7 (July 1998): 301–5. http://dx.doi.org/10.1177/030802269806100702.
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Services that provide wheelchairs to permanently disabled people have undergone fundamental changes following the recommendations of the McColl report in 1986. The devolution of centralised wheelchair services to the National Health Service (NHS) health districts in 1991 coincided with the implementation of the government's proposals for NHS reforms and community care initiatives. This paper describes a four-part research study, undertaken to identify and investigate key factors which propose effectiveness in the post-devolution wheelchair service. The sample comprised 125 wheelchair therapists as service providers and a total of 130 service users. The user sample consisted of 84 people issued with NHS manual wheelchairs, 27 indoor powered wheelchair users and 19 special seating users. An integrated methodology was employed, including questionnaires, interviews, participant observation and case studies. The research identified the development of client-centred referral and assessment procedures for wheelchairs and seating, and highlighted the need for increased therapist training. Close links between wheelchair services and local therapists were found, providing greater access to assessment for wheelchair users. An increased demand for wheelchairs outside the NHS range and a rising number of referrals for elderly people were recorded, although the management of finite resources resulted in eligibility criteria designed to control supply and provision variations between districts.
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Tshering, Sonam, Deo Raj Biswa, Dhendup Tshering, Sonam Rinchen, Sujata Rai, Rinchen Bidha, and Karma Y. Lhayang. "AUTOMATED WHEELCHAIR FOR DIFFERENTLY ABLED PERSON WITH FALL DETECTION AND MANEUVERABILITY." Journal of Applied Engineering, Technology and Management 3, no. 1 (May 30, 2023): 39–47. http://dx.doi.org/10.54417/jaetm.v3i1.108.
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While many people with disabilities can benefit from power wheelchairs, some people with disabilities find it difficult or impossible to use a basic power wheelchair. To serve this group, several researchers have developed "smart wheelchairs" that use technologies originally developed for mobile robots to reduce the physical, perceptual, and cognitive skills needed to operate a motorized wheelchair. Smart Wheelchairs are mechanically controlled devices that can move on their own with the help of a user command. This reduces the user's human effort and force required to push the wheelchair wheels. It also allows visually or physically disabled people to move from one location to another. The wheelchair also has an obstacle detection system, which reduces the likelihood of a collision while traveling.
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Jeong, Wonhyeong, Minseo Kwon, Kwangouck Youm, Hansu Jeon, and Sehoon Oh. "Design of Wheelchair Drive Unit Capable of Driving on Roads and Obstacles with Shape Conversion." Applied Sciences 14, no. 4 (February 9, 2024): 1434. http://dx.doi.org/10.3390/app14041434.
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Wheelchairs are widely used globally and are essential for providing autonomy and mobility to elderly and disabled people who have movement restrictions. Manual wheelchairs require operation through turning the wheels or pushing the wheelchair directly, thus posing mobility limitations for the user and caregiver. In contrast, electric wheelchairs, when used by the user, allow for improved flexibility by operating the wheelchair through a single control mechanism. However, the use of electric wheelchairs poses challenges in accessing areas with stairs and curbs, limiting the range of activity and thereby diminishing the quality of life for users and those reliant on electric wheelchairs. The electric wheelchair developed in this research incorporates a single motor for lightweight design. It uses a wheel travel variation actuator, eliminating the need for synchronization and allowing for low-power operation. This design reduces power loss from the caterpillar’s idling during wheel movement and includes the implementation of a pulley system. The optimal pulley belt length was calculated, and a deceleration device was installed inside the caterpillar, enabling a design that is compact, lightweight, and capable of high deceleration. On paved roads and flat terrain, the electric wheelchair is designed for high-speed travel using two pairs of front omni wheels and drive wheels. For terrains with stairs, speed bumps, unpaved roads, and unavoidable obstacles, the wheelchair is powered by caterpillars. The electric wheelchair developed through the research presented in this paper has verified the reliability of its transmission system through gear stress and deformation analysis. Additionally, an electric wheelchair based on the proposed concept was constructed to validate the drivability, safety, operability, and convenience of its driving unit. Furthermore, a user rode the constructed electric wheelchair to confirm that there were no issues with its drivability.
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D’Innocenzo, Megan E., Jonathan L. Pearlman, Yasmin Garcia-Mendez, Stephanie Vasquez-Gabela, Christina Zigler, Perth Rosen, Eviana Hapsari Dewi, Ignatius Praptoraharjo, and Anand Mhatre. "Exploratory investigation of the outcomes of wheelchair provision through two service models in Indonesia." PLOS ONE 16, no. 6 (June 1, 2021): e0228428. http://dx.doi.org/10.1371/journal.pone.0228428.
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The World Health Organization (WHO) estimates that only 17–37% of the approximately 77 million people who need a wheelchair have access to one. Many organizations are trying to address this need through varying service delivery approaches. For instance, some adhere to WHO’s recommended 8-steps service approach while others provide wheelchairs with little to no service. There is limited and sometimes conflicting evidence of the impact of the WHO’s recommendations on the outcomes of wheelchair provision. To help build this evidence, we \explored outcomes of two groups of users who received their wheelchairs through two service models over time. The 8-Steps group (n = 118) received a wheelchair selected from a range of models from service providers trained using the WHO process, and the standard of care (SOC) group (n = 24) received hospital-style wheelchairs and without clinical service. Interviews were conducted at baseline and at follow-up 3 to 6 months after provision, to collect data about wheelchair usage, satisfaction, skills, maintenance and repairs, and life satisfaction. Across-group statistical comparisons were not appropriate due to significant differences between groups. In general, participants used their wheelchairs every day but reported very low mobility levels (<500 meters for the 8-steps group, and <100 meters for the SOC group.) The 8-steps group used their wheelchair for either between 1–3 hours per day, or more than 8 hours per day. The SOC used it between 1 and 3 hours per day. Overall, wheelchair usage and wheelchair skills decreased over the 3- to 6-month data collection timeline. Wheelchair breakdowns were common in both groups emphasizing the need for maintenance, occurring more frequently in the 8-Steps (28.8%) compared to the SOC group (8%), and emphasizing the need for maintenance services. No significant differences were found when comparing device satisfaction across wheelchairs types. Our results emphasize the need for routine maintenance to address frequent wheelchair breakdowns. Our results also demonstrate a large disparity in several outcome variables across groups which motivates future studies where across-group comparisons are possible.
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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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Stewart, Hilary, and Nick Watson. "A Sociotechnical History of the Ultralightweight Wheelchair: A Vehicle of Social Change." Science, Technology, & Human Values 45, no. 6 (December 6, 2019): 1195–219. http://dx.doi.org/10.1177/0162243919892558.
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The emergence of the ultralightweight wheelchair has transformed the lives of millions of disabled people. It has radically changed the principles and practices of wheelchair design, manufacture, and prescription and redefined wheelchair users and wheelchair use. Designed and built largely by wheelchair users themselves, it was driven initially by a desire to improve sport performance and later by a wish for improved access to the community and built environment. In this paper, we draw on oral histories and documentary sources to reconstruct its sociotechnical history. We employ the analytical concept of “boundary object” to illuminate how the wheelchair as a technological artifact is implicated in relations of social change and show the role of wheelchair users in the development and emergence of the ultralightweight wheelchair. We highlight the tensions and negotiations within this history and the push and pull between different social groups. The emergence of the ultralightweight wheelchair helped to reconfigure ideas about wheelchairs and their users and allowed wheelchairs to gain a foothold within broader social and technological infrastructures. What makes this account powerful is that this is a success story for a group who have historically been excluded from design processes.
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Mahendra, Jagadurti, K. Uma Maheswari, Shaik Munawar Basha, Puduru Rajanna, Kamalapuri Ravi, and B. Rangs. "Arduino UNO Based Wheelchair Control using Bluetooth and Android Mobile." Journal of Switching Hub 7, no. 2 (July 4, 2022): 8–13. http://dx.doi.org/10.46610/josh.2022.v07i02.002.
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The main goal of this project is to design and construct a low-cost wheelchair control system that uses an Android phone. Patients with diverse physical limitations have relied on wheelchairs to assist them with movement and to meet their day-to-day prerequisites. However, in other circumstances, the mobility of a wheelchair is dependent on another person. It includes people who are unable to lift their arms or push the wheels forward, such as paraplegics, quadriplegics, stroke patients, the elderly, and others. Joystick-oriented wheelchairs, which are supposed to be a solution for these people, might cause a variety of issues since they demand fundamental shoulder mobility. For the categories described above of patients, this is not always practicable. Furthermore, because it is wireless and can be worn on either hand, this solution does not have the positioning restrictions that a joystick wheelchair could have, allowing the user to sit in their preferred posture for the least amount of pain. The goal of this initiative is to enable autonomous mobility for people with disabilities. Thus, this research study provides a Bluetooth-based wheelchair prototype that maybe operated by an Android smartphone application. A transmitter and a receiver that can communicate wirelessly makeup the framework. The 433 Mhz RF Transmitter and Receiver Unit was utilized for wireless transmission since it delivers data through an antenna at speeds ranging from 1Kbps to 10Kbps and has a range of up to 100 metres, The wheelchair's receiver unit receives signals from the transmitter unit through an Arduino Uno micro-controller, which causes the wheels to turn in the desired direction. Motor drivers that convert electricity as needed by the wheels makeupmakeup the reception unit. This technology offers an alternative to commercial wheelchairs since it is more effective, less expensive, and simpler to control.
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Satyavir, Singh, Mani Shweta, Singh Satyadev, and Sarika. "Voice controlled wheelchair with collision avoidance." i-manager's Journal on Digital Signal Processing 10, no. 1 (2022): 1. http://dx.doi.org/10.26634/jdp.10.1.18843.
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Several studies and surveys have shown that having independent mobility brings significant benefits to both children and adults. While many people with disabilities are contained in traditional or motorized wheelchairs, some of the disabled community find difficulty in using wheelchairs. Many researchers have experimented with various technologies to make the wheelchair suitable for this purpose. The proposed design includes manual control and includes a voice activation system for people with physical disabilities. This paper describes a "Voice Controlled Collision Avoidance Wheelchair" for people with disabilities in which a voice command controls the movements of the wheelchair. The voice command is transmitted through a Bluetooth-enabled cellular device, and the command is transmitted and converted to a string using BT Voice Control for Arduino, and then to an SR-04 Bluetooth module connected to the Arduino board to control the wheelchair. The project also provides for smart wheelchairs by incorporating collision avoidance systems using an ultrasonic sensor and stairwell fall protection devices to prevent wheelchairs from falling downstairs.
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Shyu, Jenq Huey, Ta Chang, and Yu Chen Shyu. "A Kinematic Model Used to Customize Design of Manual Wheelchair." Key Engineering Materials 450 (November 2010): 5–8. http://dx.doi.org/10.4028/www.scientific.net/kem.450.5.
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That wheelchair user’s shoulder joint injuries are directly related to poor wheelchair design and the location of the wheelchair driving mechanism has been proven clinically. This work presents a novel approach to rapidly customize the design of manual wheelchairs, such that each user can easily obtain a custom manual wheelchair, thereby reducing the potential for shoulder joint injury. In this study, a human-chair system composed of a human body and a wheelchair was simulated as a plain single-loop five-bar linkage. Mobility analysis was conducted to identify the corresponding joint workspace. By analyzing linkage movement and the upper-limb muscle strength of a user, the optimal location of the wheel hub and optimal radius of the handwheel were identified as the bases of a customized design for manual wheelchairs.
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Sukerkar, Kedar, Darshitkumar Suratwala, Anil Saravade, Jairaj Patil, and Rovina D’britto. "Smart Wheelchair: A Literature Review." International Journal of Informatics and Communication Technology (IJ-ICT) 7, no. 2 (August 1, 2018): 63. http://dx.doi.org/10.11591/ijict.v7i2.pp63-66.
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In today’s world there are many disabled persons who find it difficult to perform movements or perform daily activities. This types of persons are mainly dependent on others for their assistance. But they can become self-independent and perform some daily activities on their own with the help of assistive devices. The most widely used assistive devices are Wheelchairs. Wheelchairs is basically a chair fitted with wheels, which can help people move around who cannot walk because of illness, disability or injury. But there are many disabled people with weak limbs and joints who cannot move the wheelchair. Thus, Smart Wheelchair can benefit a lot to them and everyone in society. Smart Wheelchairs are electric powered wheelchairs with many extra components such as a computer and sensors which help the user or guardian accompanying wheelchair to handle it easily and efficiently. The recent development in the field of Artificial Intelligence, Sensor technologies and Robotics help the growth of wheelchairs with new features. This paper is to review the current state of art of Smart Wheelchairs and discuss the future research in this field.
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Sakakibara, Brodie M., William C. Miller, Janice J. Eng, François Routhier, and Catherine L. Backman. "Health, Personal, and Environmental Predictors of Wheelchair-Use Confidence in Adult Wheelchair Users." Physical Therapy 95, no. 10 (October 1, 2015): 1365–73. http://dx.doi.org/10.2522/ptj.20140537.
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Background There are no predictive models of wheelchair-use confidence. Therefore, clinicians and researchers are limited in their ability to screen for and identify wheelchair users who may be more prone to low wheelchair-use confidence and may benefit from clinical intervention. Objective The purpose of this study was to identify health-related, personal, and environmental factors that predict perceived wheelchair-use confidence in community-dwelling adults who use manual wheelchairs. Design A cross-sectional study was conducted. Methods Community-dwelling manual wheelchair users (N=124) were included in the study if they were ≥50 years of age, had ≥6 months of wheelchair use experience, and had no cognitive impairment. The Wheelchair Use Confidence Scale was used to assess wheelchair-use confidence. The sociodemographic information form, Functional Comorbidity Index, Seating Identification Tool, Interpersonal Support and Evaluation List, and Home and Community Environment Instrument captured the independent variables. Blocks of health, personal, and environmental variables were sequentially entered into the regression model. Results Five personal variables (age, standardized beta [β]=−0.18; sex, β=−0.26; daily hours of wheelchair occupancy, β=0.20; wheelchair-use training, β=0.20; and wheelchair-use assistance, β=−0.34) and one environmental variable (need for seating intervention, β=−0.18) were statistically significant predictors, explaining 44% of the confidence variance. Limitations The sample comprised volunteers and, therefore, may underrepresent or overrepresent particular groups within the population. The study's cross-sectional research design does not allow for conclusions to be made regarding causality. Conclusion Older women who use wheelchairs and who require assistance with wheelchair use may have low wheelchair-use confidence. The same is true for individuals who have no formal wheelchair-use training, who are in need of a seating intervention, and who report few hours of daily wheelchair use. These wheelchair users may require clinical attention and benefit from intervention.
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Abdulghani, Mokhles M., Kasim M. Al-Aubidy, Mohammed M. Ali, and Qadri J. Hamarsheh. "Wheelchair Neuro Fuzzy Control and Tracking System Based on Voice Recognition." Sensors 20, no. 10 (May 19, 2020): 2872. http://dx.doi.org/10.3390/s20102872.
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Autonomous wheelchairs are important tools to enhance the mobility of people with disabilities. Advances in computer and wireless communication technologies have contributed to the provision of smart wheelchairs to suit the needs of the disabled person. This research paper presents the design and implementation of a voice controlled electric wheelchair. This design is based on voice recognition algorithms to classify the required commands to drive the wheelchair. An adaptive neuro-fuzzy controller has been used to generate the required real-time control signals for actuating motors of the wheelchair. This controller depends on real data received from obstacle avoidance sensors and a voice recognition classifier. The wheelchair is considered as a node in a wireless sensor network in order to track the position of the wheelchair and for supervisory control. The simulated and running experiments demonstrate that, by combining the concepts of soft-computing and mechatronics, the implemented wheelchair has become more sophisticated and gives people more mobility.
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Suzuki, Ryota, Yoshinori Kobayashi, Yoshinori Kuno, Taichi Yamada, Keiichi Yamazaki, and Akiko Yamazaki. "Maintaining Formation of Multiple Robotic Wheelchairs for Smooth Communication." International Journal on Artificial Intelligence Tools 25, no. 05 (September 15, 2016): 1640005. http://dx.doi.org/10.1142/s0218213016400054.
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To meet the demands of an aging society, research on intelligent/robotic wheelchairs have been receiving a lot of attention. In elderly care facilities, care workers are required to communicate with the elderly in order to maintain both their mental and physical health. While this is regarded as important, having a conversation with someone on a wheelchair while pushing it from behind in a traditional setting would interfere with their smooth and natural conversation. So we are developing a robotic wheelchair system which allows companions and wheelchair users to move in a natural formation. This paper reports on an investigation to learn the patterns of human behavior when the wheelchair users and their companions communicate while walking together. The ethnographic observation reveals a natural formation of positioning for both companions and wheelchair users. Based on this investigation, we propose a multiple robotic wheelchair system which can maintain desirable formations for communication between wheelchairs.
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Sagawa Júnior, Yoshimasa, Alessandro Haupenthal, Noé Gomes Borges Junior, Daniela Pacheco dos Santos, and Eric Watelain. "Wheelchairs propulsion analysis: review." Fisioterapia em Movimento 25, no. 1 (March 2012): 185–94. http://dx.doi.org/10.1590/s0103-51502012000100018.
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OBJECTIVES: To analyze aspects related with wheelchair propulsion. MATERIALS AND METHODS: In order to delineate this review the search for information was carried out within electronics databases, using the following descriptors: "wheelchair propulsion", "wheelchair biomechanics" e "wheelchair users". Full papers published in English and French were included in the study. RESULTS: The wheelchair propulsion is a complex movement that requires the execution of repeated bi manual forces applications during a short time period. In this movement high levels of force must be produced due to the bad mechanical performance of the wheelchair. Could be characterized that wheelchair users are not satisfied with their wheelchair, the places are not adapted to their presence and lack of specific criteria for the adjustment of this equipment. The main points to look at are the seat height in relation to elbow flexion (100-120 degrees) with his hand in the propulsion rim and tire pressure. The semicircular mode of technique propulsion seems to be more appropriate; in this pattern the wheelchair user returns his hand under the rim after propulsion. Efforts in wheelchairs are high and the incidence of injuries in wheelchair users is high. CONCLUSION: One can conclude that in spite of researchers’ efforts there are still many divergences between topics and methods of evaluation, what makes difficult to apply the experimental results to the wheelchairs users’ daily life.
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Wieczorek, Bartosz, Łukasz Warguła, and Mateusz Kukla. "Influence of a Hybrid Manual–Electric Wheelchair Propulsion System on the User’s Muscular Effort." Acta Mechanica et Automatica 17, no. 1 (January 1, 2023): 28–34. http://dx.doi.org/10.2478/ama-2023-0003.
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Abstract Self-propelled wheelchairs favour the rehabilitation process, forcing the user to be physically active. Unfortunately, in most cases, the manual propulsion is not adapted to the individual needs and physical capabilities of the user. This paper presents the results of operational tests of a wheelchair equipped with a hybrid propulsion system in which the muscle strength generated by the user is assisted by two independent electric motors. The research aimed to investigate the influence of the applied control algorithm and the assistance factor (W) on the value of the muscular effort (MA) while propelling the wheelchair with the use of push rims. A modified ARmedical AR-405 wheelchair equipped with two MagicPie 5 electric motors built into the wheelchair’s hubs with a power of 500 W was used in this research. The tests were carried out on a wheelchair test bench simulating the moment of resistance within the range of 8–11 Nm. Surface electromyography was employed for the measurement of MA, specifically, a four-channel Noraxon Mini DTS apparatus. The research was carried out on five patients from the group of C50 anthropometric dimensions. The effort was measured for four muscles: deltoid–anterior part, deltoid–posteriori part, and triceps brachii and extensor carpi radialis longus. The effectiveness of the hybrid propulsion system was observed based on the extensor carpi radialis longus muscle. In this case, for the standard wheelchair, the MA ranged from 93% to 123%. In contrast, for a wheelchair equipped with the hybrid propulsion system, at W = 70%, the MA was within the range of 43%–75%.
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Sydor, Maciej, Marcin Wieczorek, Miloš Hitka, and Miloš Gejdoš. "Experimental Study of Persons with Disability, Wheelchairs, and Car Interaction." Systemy Logistyczne Wojsk 59, no. 2 (March 29, 2024): 263–86. http://dx.doi.org/10.37055/slw/186378.
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Driving a car independently significantly enhances the quality of life, particularly for individuals with mobility disabilities. Wheelchair users face several challenges when loading and unloading their wheelchairs into and from vehicles, hindering their personal transportation independently. The influence of wheelchair design on the wheelchair and car compatibility for self-loading and unloading hasn't been fully explored in the scientific literature; therefore, this study investigates the impact of various design features found in modern wheelchairs on their suitability for disabled drivers. Four types of wheelchairs were compared in this study; two participants with paraplegia, one male and one female, participated in the tests. Video recordings captured the procedures for getting in and out of the vehicle. Subsequent results analysis involved breaking down these procedures into steps and comparing them. The study demonstrated that times of independent entry into a car and loading of a wheelchair ranged from 48 to 74 seconds, while exiting the vehicle and loading a wheelchair phase took between 56 and 86 seconds. A key takeaway from this research is that dividing the wheelchair frame, the largest and heaviest component, into two parts facilitates loading and unloading processes. However, this may slightly increase the duration of these activities. Detaching the seat aids more individuals with limited upper body strength.
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Jatmiko, Hapsoro Agung, and Rini Dharmastiti. "PENGEMBANGAN ALAT UKUR EVALUASI DAN PERANCANGAN PRODUK KURSI RODA." Jurnal Teknosains 7, no. 2 (September 8, 2018): 104. http://dx.doi.org/10.22146/teknosains.28222.
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A wheelchair is one of the mobility aids for people with disabilities. Availability of wheelchair type is very decisive for users based on the limitations they have. The problem felt by users in Indonesia today, especially in Yogyakarta, is that users have not got the right kind of wheelchairs with the needs, with certain limitations. This study aims to develop a wheelchair evaluation and to know the user's expectation of the wheelchair design. This study shows that there are problems due to the users not getting a wheelchair that suits their needs. The wheelchair design that the users want are the wheelchair with 3 wheels and have new feature.
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Rahimunnisa, K., Atchaiya M., Brindhhiniy Arunachalam, and V. Divyaa. "AI-based smart and intelligent wheelchair." Journal of Applied Research and Technology 18, no. 6 (December 31, 2020): 362–67. http://dx.doi.org/10.22201/icat.24486736e.2020.18.6.1351.
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The differently abled and/or old-aged people require assistance for their movement. Generally, such assistant providing tool is wheelchair. Normal wheelchairs are manually operated and heavy to move adding burden to the suffered. Hence, automated wheelchairs that are equipped with sensors and a data processing unit constitute a special class of wheeled mobile robots, termed as “smart wheelchairs” in general. In the existing system, the wheelchair movement that is controlled by joystick uses buttons to start and stop the wheel. This is difficult for the differently abled to press the required button with precision. Although there are smart wheelchairs with gesture control, it lacks accuracy in the calculation of the location. The proposed system uses artificial intelligence for its working and proves to be a unique combination of wheelchair and health monitoring system. The wheelchair can be accessed both in manual and automatic modes. In the manual mode, the wheel is controlled using joystick whereas in the automated mode, MPU6050 sensor and accelerometer is used to control the direction by gesture. SPO2 sensor attached to the wheelchair is used to collect the health parameters. Thus, enabling the self-dependency of the person. Further, deep learning analysis of the data from the sensors and the wheelchair usage pattern is compared with the dataset to determine the stress level. The signal from the sensors is monitored and the vitals data is updated in the ThingSpeak website via Bluetooth module serving as a digital health chart.
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McMahon, Martin, and N. J. Dudley. "General Practitioners and Wheelchair Prescribing." British Journal of Occupational Therapy 55, no. 5 (May 1992): 183–85. http://dx.doi.org/10.1177/030802269205500505.
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A random sample of general practitioners was surveyed by postal questionnaire to determine their knowledge of wheelchairs and wheelchair prescribing, and their opinion of the usefulness of the A0F5G for wheelchair prescribing. Seventy-four per cent considered their knowledge of wheelchairs to be ‘not very good’ or worse, and one-third found the A0F5G to be inadequate for prescribing and difficult to complete. Inadequacy of training was identified as the likely cause of these findings. Improved educational programmes for doctors at both an undergraduate and a postgraduate level would raise the standards of wheelchair prescribing.
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Shah, Het M. "Cost-Efficient Remote-Controlled Wheelchair." International Journal of Research Publication and Reviews 03, no. 12 (2022): 371–73. http://dx.doi.org/10.55248/gengpi.2022.31206.
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A Smart Wheelchair is a Power Wheelchair with numerous sensors, assistive technology, and computers built in that allow a disabled person to travel around freely and safely. These wheelchair designs are gradually replacing regular wheelchairs, although a sizable number of disabled persons are unable to afford one due to their high pricing. As a result, we must deliver a smart wheelchair that is both affordable and packed with capabilities that take advantage of the most recent hardware and software. There have been many admirable attempts made in recent years to achieve this goal. They have embraced several technologies, including artificial intelligence, where they created an autonomous wheelchair that used machine learning principles to travel. Some of them have also used the Internet of Things to manage wheelchairs using a voice recognition system. This report will present a cost-effective Smart Wheelchair-based on PWM and DIR from microcontroller and IoT technology that have several features to gain disabled people, especially poor people who cannot afford expensive Smart Wheelchair, the required help to finish daily life tasks without external help. To conclude this project, we will make the Smart Wheelchair affordable to a wide range of disabled people and will be using PMDC motor, CYTRON smart drive MIDDS30 dual 30A, 12V 12AH battery and a 6-channel controller to control the wheelchair
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Beekman, Claire E., Leslie Miller-Porter, and Marion Schoneberger. "Energy Cost of Propulsion in Standard and Ultralight Wheelchairs in People With Spinal Cord Injuries." Physical Therapy 79, no. 2 (February 1, 1999): 146–58. http://dx.doi.org/10.1093/ptj/79.2.146.
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AbstractBackground and Purpose. Wheelchair- and subject-related factors influence the efficiency of wheelchair propulsion. The purpose of this study was to compare wheelchair propulsion in ultralight and standard wheelchairs in people with different levels of spinal cord injury. Subjects. Seventy-four subjects (mean age=26.2 years, SD=7.14, range=17-50) with spinal cord injury resulting in motor loss (30 with tetraplegia and 44 with paraplegia) were studied. Method. Each subject propelled standard and ultralight wheelchairs around an outdoor track at self-selected speeds, while data were collected at 4 predetermined intervals. Speed, distance traveled, and oxygen cost (V̇o2 mL/kg/m) were compared by wheelchair, group, and over time, using a Bonferroni correction. Results. In the ultralight wheelchair, speed and distance traveled were greater for both subjects with paraplegia and subjects with tetraplegia, whereas V̇o2 was less only for subjects with paraplegia. Subjects with paraplegia propelled faster and farther than did subjects with tetraplegia. Conclusion and Discussion. The ultralight wheelchair improved the efficiency of propulsion in the tested subjects. Subjects with tetraplegia, especially at the C6 level, are limited in their ability to propel a wheelchair.
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Tembhurne, Er Rohit. "Design and Development of a Smart Seat for Relieving from Pressure Ulcers." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 15, 2021): 1114–18. http://dx.doi.org/10.22214/ijraset.2021.36478.
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The long-term effects of sitting in a wheelchair/chair can be painful. People who use wheelchairs/chair can get muscle deformities and even serious injuries. Wheelchair/chair injuries and pains, such as pressure ulcers, normally hit people who spend a significant amount of time in wheelchairs. Bad posture is another major challenge for people who use wheelchairs/chair because they are not able to change their sitting position.
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Curtin, Michael. "Powered Wheelchairs and Tetraplegic Patients: Improving the Service." British Journal of Occupational Therapy 56, no. 6 (June 1993): 204–6. http://dx.doi.org/10.1177/030802269305600603.
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To improve the powered wheelchair service offered to patients with a spinal cord injury, the occupational therapy staff at the National Spinal Injuries Centre conducted a literature review, carried out a survey of current powered wheelchair users and arranged demonstrations of the majority of powered wheelchairs available in the United Kingdom. The information gathered from this enabled the therapists to update their knowledge, and provided them with material to run a powered wheelchair assessment clinic where each patient can receive objective and informed guidance on which wheelchairs are most suitable for his/her needs. To assist patients further with their decision, they were able to try a variety of powered wheelchairs and options for an extended period of time.
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Higuchi, Masaru, Tomonori Shinagawa, Hirohiko Ito, Yukio Takeda, and Koichi Sugimoto. "Improvement of Ride Quality of a Wheelchair When it Passes over Small Steps." Journal of Robotics and Mechatronics 19, no. 2 (April 20, 2007): 181–89. http://dx.doi.org/10.20965/jrm.2007.p0181.
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Wheelchairs, although the most widely used moving welfare implements, expose users to whole-body vibration and discomfort when it passes over obstacles such as steps and Braille blocks. To increase the comfort of wheelchair users, it is necessary to improve wheelchair ride quality. In this paper, we discuss dynamic characteristics of the human-wheelchair system, a ride-quality index of a wheelchair when it passes over small steps, and suspension design improving wheelchair ride quality. To simulate the dynamic characteristics of the human-wheelchair system, a model of human-wheelchair system that included a model of contact between the wheel and the terrain is proposed, and results of simulations and experiments are compared and discussed.
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Gakopoulos, Sotirios, Ioana Gabriela Nica, Saranda Bekteshi, Jean-Marie Aerts, Elegast Monbaliu, and Hans Hallez. "Development of a Data Logger for Capturing Human-Machine Interaction in Wheelchair Head-Foot Steering Sensor System in Dyskinetic Cerebral Palsy." Sensors 19, no. 24 (December 7, 2019): 5404. http://dx.doi.org/10.3390/s19245404.
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The use of data logging systems for capturing wheelchair and user behavior has increased rapidly over the past few years. Wheelchairs ensure more independent mobility and better quality of life for people with motor disabilities. Especially, for people with complex movement disorders, such as dyskinetic cerebral palsy (DCP) who lack the ability to walk or to handle objects, wheelchairs offer a means of integration into daily life. The mobility of DCP patients is based on a head-foot wheelchair steering system. In this work, a data logging system is proposed to capture data from human-wheelchair interaction for the head-foot steering system. Additionally, the data logger provides an interface to multiple Inertial Measurement Units (IMUs) placed on the body of the wheelchair user. The system provides accurate and real-time information from head-foot navigation system pressure sensors on the wheelchair during driving. This system was used as a tool to obtain further insights into wheelchair control and steering behavior of people diagnosed with DCP in comparison with a healthy subject.
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Conger, Scott A., and David R. Bassett. "A Compendium of Energy Costs of Physical Activities for Individuals Who use Manual Wheelchairs." Adapted Physical Activity Quarterly 28, no. 4 (October 2011): 310–25. http://dx.doi.org/10.1123/apaq.28.4.310.
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The purpose of this study was to develop a compendium of wheelchair-related physical activities. To accomplish this, we conducted a systematic review of the published energy costs of activities performed by individuals who use wheelchairs. A total of 266 studies were identified by a literature search using relevant keywords. Inclusion criteria were studies utilizing individuals who routinely use a manual wheelchair, indirect calorimetry as the criterion measurement, energy expenditure expressed as METs or VO2, and physical activities typical of wheelchair users. Eleven studies met the inclusion criteria. A total of 63 different wheelchair activities were identified with energy expenditure values ranging from 0.8 to 12.5 kcal·kg-1·hr-1. The energy requirements for some activities differed between individuals who use wheelchairs and those who do not. The compendium of wheelchair-related activities can be used to enhance scoring of physical activity surveys and to promote the benefits of activity in this population.
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nd, Aravi, Ra gul, Gok ulraja, and Sug anya. "Wheelchair Assistance and Guidance Using IOT." International Academic Journal of Innovative Research 9, no. 2 (July 20, 2022): 22–24. http://dx.doi.org/10.9756/iajir/v9i2/iajir0913.
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A Smart Wheelchair is a Power Wheelchair with numerous sensors, assistive technology, and computers built in that allow a disabled person to travel around freely and safely. People with disabilities, such as impairments, handicaps, and life-altering injuries, are the users. The conventional wheelchairs are being increasingly replaced by these new models. Only 5 to 15% of the 70 million disabled individuals worldwide, according to the World Health Organization (WHO), have access to wheelchairs. As a result, we must supply a cost-effective Smart that uses cutting-edge components and technology while keeping costs to a minimum. They have embraced a number of technologies, including artificial intelligence, where they created an autonomous wheelchair that used machine learning principles to travel. Some of them have also used the Internet of Things to manage the wheelchair using a voice recognition system. This report will outline an inexpensive Smart Wheelchair-based Arduino Nano microcontroller and Internet of Things (IoT) technology that has a number of features to help disabled people, particularly poor people who cannot afford an expensive Smart Wheelchair, get the assistance they need to complete daily tasks without help. As a result of this project, a variety of disabled people will be able to afford smart wheelchairs. It will be powered by Arduino Nano, ESP-12e module for Wi-Fi access, MPU6050 for fall detection with voice message notification using IFTTT platform, obstacle detection with buzzer and LED for hazard detection, voice recognition system, and joysticks for wheelchair control.
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Ossada, Vinícius Aparecido Yoshio, Márcia Regina Garanhani, Roger Burgo de Souza, and Viviane de Souza Pinho Costa. "The wheelchair and its essential components for the mobility of quadriplegic persons with spinal cord injury." Acta Fisiátrica 21, no. 4 (December 9, 2014): 162–66. http://dx.doi.org/10.11606/issn.2317-0190.v21i4a103864.
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Objective: This study sought to understand which items are essential to the wheelchair from the perspective of a person with quadriplegic spinal cord injury (SCI). Method: The study was qualitative with semi-structured interviews and discourse analysis, as well as a checklist of the wheelchair being used and the wheelchair provided by the government’s Unified Health System (SUS). Results: The causes of SCI were motor vehicle accidents (60%), diving into shallow waters (30%) and being struck by a vehicle (10%), respectively and the injury time averaged 16.3 years (± 7.14). All of the subjects were in physiotherapy. The number of wheelchairs tested before finding the proper one were two to five and some participants practiced adapted sports with the wheelchair. The checklist showed that the government wheelchair had insufficient items and the discourse analysis resulted in four categories: Items, materials, and conditions; Learning functionality; Advantages and disadvantages of the wheelchair; and Feelings experienced. The wheelchair is essential to acquiring mobility for people with quadriplegia and trying out different models and getting orientation on the items are important for their acquisition. Suitable items facilitate acceptance, better adaptation, mobility and enable autonomy. Conclusion: The wheelchair from the government’s health system was insufficient, leading to its being abandoned, and wheelchairs acquired for their functionality, with essential items, responsive to the user’s individuality and taste proved to be useful and appropriate, despite their high cost.
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Kholis, Nur, Yudha Pratama, Hamza Tokomadoran, and Vio Galuh Puspita. "Perancangan Kursi Roda Ergonomis Untuk Penunjang Disabilitas." Jurnal Teknologi dan Manajemen Industri Terapan 1, no. 4 (December 26, 2022): 267–76. http://dx.doi.org/10.55826/tmit.v1iiv.29.
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ABSTRAK Pembuatan rancangan kursi roda sangat dibutuhkan oleh para penyandang disabilitas atau disabel kinetik (aspek medis membutuhkan kursi roda). Kursi roda pada umumnya hanya dengan penggerak dan dijalankan secara manual menggunakan tangan atau didorong, dengan demikian ketika tidak ada yang mendorong, pengguna harus memutar roda kursi agar kursi roda dapat bergerak. Posisi ini tidak nyaman dan aman karena dapat membahayakan pengguna kursi roda. Metode yang dilakukan dengan menggunakanMetode EFD.Kami merancang kursi roda yang ramah kepada disabilitas dan disabel kinetik, dilengkapi dengan penyangga kaki yang lebih nyaman dengan sistem pengereman, sehingga para pengguna kursi roda nyaman dan aman. Kursi roda ini juga di desain dengan perhitungan ergonomis. Kata kunci: Disabel kinetic,perancangan kursi roda,ergonomic,HOQ ABSTRACT Designing a wheelchair is really needed by people with disabilities or kinetic disabilities (the medical aspect requires a wheelchair). Wheelchairs are generally driven only and are operated manually by hand or pushed, thus when no one is pushing, the user must turn the wheelchair wheels so that the wheelchair can move. This position isuncomfortable and safe because it can endanger wheelchair users. We design wheelchairs that are friendly to disability and kinetic disabilities, equipped with leg supports that are more comfortable with a braking system, so that wheelchair users are comfortable and safe. This wheelchair is also designed with ergonomic calculations. Keywords: kinetic disability, wheelchair design,Ergonomic.HOQ
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MAEDA, MIKIO, YASUSHI NAKAYAMA, and SHUTA MURAKAMI. "NAVIGATION CONTROL OF AN INTELLIGENT WHEELCHAIR USING FUZZY LOGIC." International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 07, no. 04 (August 1999): 327–36. http://dx.doi.org/10.1142/s0218488599000283.
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Hospital patients, persons of old age, and physically handicapped persons need wheelchairs and helpers. When a helper carries one of these persons, he/she must be attend on the person ridden on a wheelchair. The helpers are busy and have a lot of work. Patients without helpers grow very tired navigating their wheelchairs. To help, we propose an autonomous fuzzy navigation system for an automatic control of a wheelchair. This system consists of a navigation planning part, a navigation control part, and an environment recognition part. In this paper, we describe an intelligent wheelchair with a fuzzy navigation system and discuss experimental results.
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LIN, CHIEN-JU, PO-CHOU LIN, FONG-CHIN SU, and KAI-NAN AN. "BIOMECHANICS OF WHEELCHAIR PROPULSION." Journal of Mechanics in Medicine and Biology 09, no. 02 (June 2009): 229–42. http://dx.doi.org/10.1142/s0219519409002948.
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With progress of modern technology, manually-propelled wheelchairs are still of importance for individuals with mobility impairments. The repeated wheelchair propulsion and strenuous daily activities cause high loads and thus injuries on the upper extremity joints. Over the past few years, a considerable number of studies have been made on biomechanical analysis of wheelchair propulsion and wheelchair-related activities. Thorough investigation of biomechanics during wheelchair propulsion enhances comprehension of mechanism of injuries and provides information to improve wheelchair design and fitting. Numerous investigations have been made to demonstrate factors which cause low effectiveness of force application and inefficiency of movements. Emphasis was also placed on developing analytical models to simulate wheelchair propulsion.
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Langner, Martin, and David Sanders. "Controlling wheelchair direction on slopes." Journal of Assistive Technologies 2, no. 2 (June 1, 2008): 32–41. http://dx.doi.org/10.1108/17549450200800016.
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Simple and affordable systems are described to assist wheelchair users in steering their wheelchairs across sloping ground. The systems can be attached to many standard powered wheelchairs. Wheelchairs often steer by having two swivelling caster wheels but problems with this configuration occur when a wheelchair is driven along sloping ground because the casters can swivel in the direction of the slope. Gravity then causes the wheelchair to start an unwanted turn or ‘veer’ and the chair goes in an unintended direction. This situation is exacerbated for switch users, as switches cannot provide fine control to trim and compensate. Early experiments demonstrated that calibrating wheelchair controllers for straight‐line balance and optimising motor‐compensation did not solve this problem. Caster angle was selected to provide feedback to the wheelchair controllers. At the point when veer is first detected, a wheelchair has already begun to alter course and the job of the correction system is to minimise this drift from the desired course. A rolling road was created as an assessment tool and trials with both the test bed and in real situations were conducted to evaluate the new systems. The small swivel detector that was created could be successfully attached to caster swivel bearings. The new system was successful, robust and was not affected by changeable parameters. Although primarily intended for switch users, the methods can be applied to users with proportional controls.
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Zhang, Xiaochen, Ziyang Song, Qianbo Huang, Ziyi Pan, Wujing Li, Ruining Gong, and Bi Zhao. "Shared eHMI: Bridging Human–Machine Understanding in Autonomous Wheelchair Navigation." Applied Sciences 14, no. 1 (January 4, 2024): 463. http://dx.doi.org/10.3390/app14010463.
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As automated driving system (ADS) technology is adopted in wheelchairs, clarity on the vehicle’s imminent path becomes essential for both users and pedestrians. For users, understanding the imminent path helps mitigate anxiety and facilitates real-time adjustments. For pedestrians, this insight aids in predicting their next move when near the wheelchair. This study introduces an on-ground projection-based shared eHMI approach for autonomous wheelchairs. By visualizing imminent motion intentions on the ground by integrating real and virtual elements, the approach quickly clarifies wheelchair behaviors for all parties, promoting proactive measures to reduce collision risks and ensure smooth wheelchair driving. To explore the practical application of the shared eHMI, a user interface was designed and incorporated into an autonomous wheelchair simulation platform. An observation-based pilot study was conducted with both experienced wheelchair users and pedestrians using structured questionnaires to assess the usability, user experience, and social acceptance of this interaction. The results indicate that the proposed shared eHMI offers clearer motion intentions display and appeal, emphasizing its potential contribution to the field. Future work should focus on improving visibility, practicality, safety, and trust in autonomous wheelchair interactions.
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Thongpance, Nuntachai, and Phichitphon Chotikunnan. "Design and Construction of Electric Wheelchair with Mecanum Wheel." Journal of Robotics and Control (JRC) 4, no. 1 (March 8, 2023): 71–82. http://dx.doi.org/10.18196/jrc.v4i1.17095.
Full textAbstract:
This research aimed to design and construct an electric wheelchair with mecanum wheels that can move in any desired direction and speed based on the joystick controller. This represents a significant improvement over traditional electric wheelchairs, which are limited to linear movement in a single direction. The research contribution of this study is the development of an electric wheelchair with mecanum wheels that allows for improved mobility and independence for wheelchair users. The design includes a joystick controller and the use of an average filter to improve the processing of the joystick. This represents a significant improvement over traditional electric wheelchairs, which are limited to linear movement in a single direction. The design and construction of the electric wheelchair followed the ISO 2570-2555 guidelines and utilized Arduino DUE as the main processor for controlling the rotation of the wheels. The gain of speed and angle of the analog joystick were determined using the technique of finding the resultant vector to control the direction and speed of the wheels. The resulting electric wheelchair had a standard structure and was able to move in the desired direction and speed based on the movement of the joystick controller, demonstrating the success of the design and construction in achieving its objective. In conclusion, the development of joystick control for electric wheelchairs is important and allows for the creation of significantly novel and improved designs such as the electric wheelchair with mecanum wheels presented in this research.
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Labbé, Delphine, W. Ben Mortenson, Paula W. Rushton, Louise Demers, and William C. Miller. "Mobility and participation among ageing powered wheelchair users: using a lifecourse approach." Ageing and Society 40, no. 3 (September 24, 2018): 626–42. http://dx.doi.org/10.1017/s0144686x18001228.
Full textAbstract:
AbstractAbout 65 million people use wheelchairs worldwide. Powered wheelchairs offer independent mobility for those who find it difficult to propel a manual wheelchair. Previous studies have described powered wheelchairs as a mixed blessing for the users in terms of usability, accessibility, safety, cost and stigma; however, few studies have explored their impact on mobility and participation over time. Therefore, as part of a larger longitudinal study, we used a combined retrospective and prospective lifecourse perspective to explore the experiences of older adult powered wheelchair users. Based on the interpretive description approach, 19 participants took part in a series of semi-structured interviews over a two-year period about their mobility, social participation and ageing process. The participants were powered wheelchair users, at least 50 years of age, recruited in Vancouver, Montreal and Quebec City (Canada). We identified three themes that highlighted how the powered wheelchair experience was integrated into the life continuum of the users. ‘It's my legs’ emphasised how powered wheelchairs are a form of mobility that not only enables users to take part in activities, but also impacts their identities, past and present. ‘Wheels of change’ explored the dynamic nature of powered wheelchair use and changes related to ageing. ‘Getting around’ illustrated how users’ mobility was affected by the interaction with their physical and social environments. Developing public policies to advance social and environmental changes could help countries to ensure equity of access and social inclusion of those ageing with disabilities.