NEWS /
Toyota Develops Wheelchair Controlled by Brain Waves
01 Jul, 2009, 3:32 pm IST | by
tech2 News Staff
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The BSI-TOYOTA Collaboration Center has developed a system, which utilizes brain waves to control a wheelchair in as little as 125 milliseconds. Such systems allow elderly or handicapped people to interact with the world through signals from their brains, without having to give voice commands. BTCC's new system fuses RIKEN's blind signal separation and space-time-frequency filtering technology to allow brain-wave analysis in as little as 125 ms, as compared to several seconds required by conventional methods. Brain-wave analysis results are displayed on a panel so quickly that drivers do not sense any delay. The system has the capacity to adjust itself to the characteristics of each individual driver, and thereby is able to improve the efficiency with which it senses the driver's commands. Thus the driver is able to get the system to learn his/her commands (forward/right/left) quickly and efficiently. The new system has succeeded in having drivers correctly give commands to their wheelchairs. An accuracy rate of 95% was achieved, one of the highest in the world. Plans are underway to utilize this technology in a wide range of applications centered on medicine and nursing care management. R&D under consideration includes increasing the number of commands given and developing more efficient dry electrodes. So far the research has centered on brain waves related to imaginary hand and foot control. However, through further measurement and analysis it is anticipated that this system may be applied to other types of brain waves generated by various mental states and emotions. Check out a video of this in action here. (The video is in Japanese only) |
Tags: Wheelchair , Brain waves , Toyota
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