A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors
The rehabilitation of a visually impaired person (VIP) is a systematic process where the person is provided with tools that allow them to deal with the impairment to achieve personal autonomy and independence, such as training for the use of the long cane as a tool for orientation and mobility (O&am...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/23/7/848 |
| _version_ | 1797527155584794624 |
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| author | Karla Miriam Reyes Leiva Milagros Jaén-Vargas Miguel Ángel Cuba Sergio Sánchez Lara José Javier Serrano Olmedo |
| author_facet | Karla Miriam Reyes Leiva Milagros Jaén-Vargas Miguel Ángel Cuba Sergio Sánchez Lara José Javier Serrano Olmedo |
| author_sort | Karla Miriam Reyes Leiva |
| collection | DOAJ |
| description | The rehabilitation of a visually impaired person (VIP) is a systematic process where the person is provided with tools that allow them to deal with the impairment to achieve personal autonomy and independence, such as training for the use of the long cane as a tool for orientation and mobility (O&M). This process must be trained personally by specialists, leading to a limitation of human, technological and structural resources in some regions, especially those with economical narrow circumstances. A system to obtain information about the motion of the long cane and the leg using low-cost inertial sensors was developed to provide an overview of quantitative parameters such as sweeping coverage and gait analysis, that are currently visually analyzed during rehabilitation. The system was tested with 10 blindfolded volunteers in laboratory conditions following constant contact, two points touch, and three points touch travel techniques. The results indicate that the quantification system is reliable for measuring grip rotation, safety zone, sweeping amplitude and hand position using orientation angles with an accuracy of around 97.62%. However, a new method or an improvement of hardware must be developed to improve gait parameters’ measurements, since the step length measurement presented a mean accuracy of 94.62%. The system requires further development to be used as an aid in the rehabilitation process of the VIP. Now, it is a simple and low-cost technological aid that has the potential to improve the current practice of O&M. |
| first_indexed | 2024-03-10T09:40:00Z |
| format | Article |
| id | doaj.art-3bea7e8d03f14fa39f677444ad608379 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T09:40:00Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-3bea7e8d03f14fa39f677444ad6083792023-11-22T03:44:44ZengMDPI AGEntropy1099-43002021-07-0123784810.3390/e23070848A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial SensorsKarla Miriam Reyes Leiva0Milagros Jaén-Vargas1Miguel Ángel Cuba2Sergio Sánchez Lara3José Javier Serrano Olmedo4Escuela Superior Técnica de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, 28013 Madrid, SpainEscuela Superior Técnica de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, 28013 Madrid, SpainEscuela Superior Técnica de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, 28013 Madrid, SpainEscuela Superior Técnica de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, 28013 Madrid, SpainEscuela Superior Técnica de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, 28013 Madrid, SpainThe rehabilitation of a visually impaired person (VIP) is a systematic process where the person is provided with tools that allow them to deal with the impairment to achieve personal autonomy and independence, such as training for the use of the long cane as a tool for orientation and mobility (O&M). This process must be trained personally by specialists, leading to a limitation of human, technological and structural resources in some regions, especially those with economical narrow circumstances. A system to obtain information about the motion of the long cane and the leg using low-cost inertial sensors was developed to provide an overview of quantitative parameters such as sweeping coverage and gait analysis, that are currently visually analyzed during rehabilitation. The system was tested with 10 blindfolded volunteers in laboratory conditions following constant contact, two points touch, and three points touch travel techniques. The results indicate that the quantification system is reliable for measuring grip rotation, safety zone, sweeping amplitude and hand position using orientation angles with an accuracy of around 97.62%. However, a new method or an improvement of hardware must be developed to improve gait parameters’ measurements, since the step length measurement presented a mean accuracy of 94.62%. The system requires further development to be used as an aid in the rehabilitation process of the VIP. Now, it is a simple and low-cost technological aid that has the potential to improve the current practice of O&M.https://www.mdpi.com/1099-4300/23/7/848absolute orientationinertial sensorsorientation and mobilityvisually impaired rehabilitation |
| spellingShingle | Karla Miriam Reyes Leiva Milagros Jaén-Vargas Miguel Ángel Cuba Sergio Sánchez Lara José Javier Serrano Olmedo A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors Entropy absolute orientation inertial sensors orientation and mobility visually impaired rehabilitation |
| title | A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors |
| title_full | A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors |
| title_fullStr | A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors |
| title_full_unstemmed | A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors |
| title_short | A Proposal of a Motion Measurement System to Support Visually Impaired People in Rehabilitation Using Low-Cost Inertial Sensors |
| title_sort | proposal of a motion measurement system to support visually impaired people in rehabilitation using low cost inertial sensors |
| topic | absolute orientation inertial sensors orientation and mobility visually impaired rehabilitation |
| url | https://www.mdpi.com/1099-4300/23/7/848 |
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