Can like Stephen Hawking has an autonomous control walking wheelchair, is a lot of things limb disabled people dream, but its high cost prohibitive. However, in the national academy of engineering physics at the university of Moscow nuclear research robotics lab director Eugene cover, professor chapin, away from the complex system of language input, talk about the future of ordinary people have a brain to control walking wheelchair is not difficult.
Eeg + voice, gesture to realize intelligent control of the wheelchair
Professor chapin, conducted the study, is for lower limb disability and upper limb function weaker or complete loss of the disabled, providing wheelchair control mode without using a joystick. Researchers to a Titan LY - 103-120 electric wheelchair, equipped with computer control system, the user can wear brain-computer interface (BCI) technology helmet, and voice instructions, gestures to realize the independent control of the wheelchair.
Since users have at least one operating mode, why choose share three instructions, these instructions how to do between each other?
Project responsible for explain personality column cloth, choose three instructions sharing is in order to improve the control accuracy and response speed. For example, users can use electrical control forward and backward, use gestures to control steering. Is parallel to the relationship between three types of instruction, there is no one priority order, when the conflict between instructions, judging by the system which instructions meet users' real intention. Writing system, therefore, to determine three instructions of algorithm is the key to the project research.
Modular design + learning function for users to create exclusive system
Glenn cloth is introduced, and the future practical application, the system will be based on individual circumstances of each patient to adjust operation, select one or more instructions. Whether choose which operating mode, can share the same software system. No matter what kind of combination, brain control is a major operation mode; Voice commands include voice recognition and feedback function, in order to guarantee stability and avoid implanted in the back door, the system for the Java open source software; Written using c # language, gestures instruction system can not only identify the database in advance of 2 d and 3 d gesture, also support self-built gestures, consider the different patients body function, the system supports both arm wrist gesture considerably and also support small finger gestures.
Because each person brain waves are obviously different when the same instructions, so before using the system to the user's brain waves to study calibration, in order to improve the control accuracy, to properly identify the user intent.
Thanks to the modular design and strong learning ability, can effectively reduce the development cost in practical application and the debugging time, the operating system for users to quickly create their own wheelchair. At the same time, its design and the production cost will be greatly reduced. According to preliminary estimates, the future after mass production, each wheelchair price is expected to control of the operating system within the $5000 to $10000.
Psychological state monitoring + remote control to ensure consumer safety
Professor chapin, the safety of the brain control the wheelchair is the focus of project research. Future control system can real-time monitor the user's state of mind, consider the user instructions when you complete the instructions in a positive, negative or neutral mood, if issue instructions under negative emotions, system of its credibility will be reduced, to cut off the control. Future plans to build the brain control the wheelchair remote control center, through the UDP protocol will each wheelchair monitoring data to the server, take the remote control when necessary to replace the user control, to avoid danger.
Professor chapin, according to the project plan, 2016 brain control wheelchair project will complete data model design, and use the data model three kinds of control instruction large data information, through the analysis of the large data further improve the accuracy of system identification instruction and monitoring of psychological state. After six months to a year, people with disabilities in specialized medical institutions will be invited to make actual use test and perfect design, eventually get the agency certification and production licenses. If the brain control the wheelchair project success, the team will also study other brain control equipment for people with disabilities.