2019 Fiscal Year Final Research Report
Research on device control method using myoelectric potential to support forearm amputee
| Project/Area Number |
16K01567
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Tokai University |
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Principal Investigator |
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| Project Period (FY) |
2016-10-21 – 2020-03-31
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| Keywords | 筋電義手 / 手指の動作認識 / 感覚フィードバック |
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| Outline of Final Research Achievements |
The objective of this study was to develop a myoelectric prosthesis that is easy to use for forearm amputees. By attaching electrodes to the socket that matches the shape of the forearm of the user, it has become possible to measure myoelectric potential from an accurate position. We have constructed a small electromyographic meter and a finger movement recognition system. In addition, we have developed a small variable capacitance type pressure sensor with 16 sensing points, which enables accurate measurement of gripping force. We have developed a mechanism for presenting the grip force of a prosthesis by vibrating the cuff wrapped around the upper arm or by varying the pitch of the sound. Furthermore, we have developed a method of presenting the output from a tactile sensor using infrared rays attached to the fingertip as changes in the color and brightness of the optical panel.
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| Free Research Field |
生体医工学
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| Academic Significance and Societal Importance of the Research Achievements |
前腕切断者を支援するために多種の義手が使用されている。これらの中でアクチュエータを有する動力義手は、人の手指とほぼ同等の動作が可能な物が開発されているが、実用化されている物の多くは「握る」「開く」の２種類の動作ができるだけの簡単な物である。また使用者が義手で物体に触れた際に物体の感触を感じ取り、それに従って力を加減し動作を制御することは現状では極めて難しい。本研究では、前腕切断者の残存筋より導出した表面筋電位、および義手に配置したセンサを情報源とし、操作者の意図した通りの動力義手の制御を可能とする非侵襲なマンマシンインタフェースの構築を行い、義手利用者に資する技術を開発できたと考える。
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