Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display
To help the blind or visually impaired (BVI) read digitally conveniently and at low cost, we propose a bounce-type actuator driven by electromagnetic force, and based on this, a refreshable Braille display (RBD) which can display both Braille and tactile graphic information is manufactured. The inte...
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IEEE
2025-01-01
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| Series: | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
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| Online Access: | https://ieeexplore.ieee.org/document/10856226/ |
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| author | Dapeng Chen Song Zhang Lianshun Shen Chenkai Li Jianying Hua Jia Liu Aiguo Song |
| author_facet | Dapeng Chen Song Zhang Lianshun Shen Chenkai Li Jianying Hua Jia Liu Aiguo Song |
| author_sort | Dapeng Chen |
| collection | DOAJ |
| description | To help the blind or visually impaired (BVI) read digitally conveniently and at low cost, we propose a bounce-type actuator driven by electromagnetic force, and based on this, a refreshable Braille display (RBD) which can display both Braille and tactile graphic information is manufactured. The internal components of the bounce-type actuator include an electromagnet and two permanent magnets placed in a stepped manner. By passing current in different directions to the coil, the electromagnet can bounce up and down between the two permanent magnets under the action of magnetic force, thereby achieving changes in the raised state of the Braille dot. The permanent magnets placed in staggered positions have an attractive and supportive effect on the electromagnet, so the raised Braille dot can be locked in a specific position when the electromagnet is not powered on and provide a large latching force. In this paper, the force analysis and finite element simulation of the actuator actuation condition of the Braille dot actuator are carried out, and the refresh rate is measured experimentally to be about 16 Hz. Meanwhile, the overall refresh rate of the prototype can be up to 2.7 Hz. Benefiting from the full-latching structure, the RBD proposed in this paper is characterized by a large latching force, a high refresh rate, and an easy scalability. It also has the advantages of low cost, low energy consumption, reliability, and durability, providing an easy-to-promote tool for BVI to read digital information. |
| format | Article |
| id | doaj-art-067690fa68d74d79b388dab089003140 |
| institution | Kabale University |
| issn | 1534-4320 1558-0210 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
| spelling | doaj-art-067690fa68d74d79b388dab0890031402025-02-11T00:00:09ZengIEEEIEEE Transactions on Neural Systems and Rehabilitation Engineering1534-43201558-02102025-01-013370571610.1109/TNSRE.2025.353556410856226Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille DisplayDapeng Chen0https://orcid.org/0000-0002-1930-419XSong Zhang1https://orcid.org/0009-0004-4419-9223Lianshun Shen2Chenkai Li3Jianying Hua4Jia Liu5https://orcid.org/0000-0002-8383-4048Aiguo Song6https://orcid.org/0000-0002-1982-6780Tianchang Research Institute, School of Automation, CIMER, CICAEET, B-DAT, Nanjing University of Information Science and Technology, Nanjing, ChinaTianchang Research Institute, School of Automation, CIMER, CICAEET, B-DAT, Nanjing University of Information Science and Technology, Nanjing, ChinaTianchang Research Institute, School of Automation, CIMER, CICAEET, B-DAT, Nanjing University of Information Science and Technology, Nanjing, ChinaTianchang Research Institute, School of Automation, CIMER, CICAEET, B-DAT, Nanjing University of Information Science and Technology, Nanjing, ChinaNanjing School for the Blind, Nanjing, ChinaTianchang Research Institute, School of Automation, CIMER, CICAEET, B-DAT, Nanjing University of Information Science and Technology, Nanjing, ChinaSchool of Instrument Science and Engineering, Southeast University, Nanjing, ChinaTo help the blind or visually impaired (BVI) read digitally conveniently and at low cost, we propose a bounce-type actuator driven by electromagnetic force, and based on this, a refreshable Braille display (RBD) which can display both Braille and tactile graphic information is manufactured. The internal components of the bounce-type actuator include an electromagnet and two permanent magnets placed in a stepped manner. By passing current in different directions to the coil, the electromagnet can bounce up and down between the two permanent magnets under the action of magnetic force, thereby achieving changes in the raised state of the Braille dot. The permanent magnets placed in staggered positions have an attractive and supportive effect on the electromagnet, so the raised Braille dot can be locked in a specific position when the electromagnet is not powered on and provide a large latching force. In this paper, the force analysis and finite element simulation of the actuator actuation condition of the Braille dot actuator are carried out, and the refresh rate is measured experimentally to be about 16 Hz. Meanwhile, the overall refresh rate of the prototype can be up to 2.7 Hz. Benefiting from the full-latching structure, the RBD proposed in this paper is characterized by a large latching force, a high refresh rate, and an easy scalability. It also has the advantages of low cost, low energy consumption, reliability, and durability, providing an easy-to-promote tool for BVI to read digital information.https://ieeexplore.ieee.org/document/10856226/Refreshable Braille displayelectromagnetic bounce-type actuatorfull-latching structureBraille readingtactile graphic display |
| spellingShingle | Dapeng Chen Song Zhang Lianshun Shen Chenkai Li Jianying Hua Jia Liu Aiguo Song Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display IEEE Transactions on Neural Systems and Rehabilitation Engineering Refreshable Braille display electromagnetic bounce-type actuator full-latching structure Braille reading tactile graphic display |
| title | Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display |
| title_full | Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display |
| title_fullStr | Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display |
| title_full_unstemmed | Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display |
| title_short | Design and Evaluation of an Electromagnetic Bounce-Type Refreshable Braille Display |
| title_sort | design and evaluation of an electromagnetic bounce type refreshable braille display |
| topic | Refreshable Braille display electromagnetic bounce-type actuator full-latching structure Braille reading tactile graphic display |
| url | https://ieeexplore.ieee.org/document/10856226/ |
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