Shuangpin Chinese input system based on steady-state visual evoked potentials

A steady-state visual induction and input system technology, applied in the field of human-computer interaction, can solve problems such as complex stroke input, visual stimulation, and a large number of electrodes, and achieve the effects of convenient signal transmission, reduced wearing burden, and convenient use

Inactive Publication Date: 2017-06-06
XIDIAN UNIV
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AI Technical Summary

Problems solved by technology

[0004] 1) Using computer software for visual stimulation requires self-developed host computer software to assist, which cannot be well connected with existing software input methods (su

Method used

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  • Shuangpin Chinese input system based on steady-state visual evoked potentials
  • Shuangpin Chinese input system based on steady-state visual evoked potentials
  • Shuangpin Chinese input system based on steady-state visual evoked potentials

Examples

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Example Embodiment

[0039] Examples:

[0040] Such as Figure 1~4 As shown, a ShuangPin Chinese input system based on steady-state visual evoked potentials (SSVEP) includes a ShuangPin input keyboard (1), an EEG acquisition headset (2), and a wireless transmission module (3). ), the host computer (4); the wireless transmission module (3) is respectively connected to the Shuangpin input keyboard (1) and the EEG acquisition headset (2); the Shuangpin input keyboard (1) is connected to the host computer (4) via USB ;

[0041] The Shuangpin input keyboard (1) includes a multifunctional circuit board box (11), a light source board (12), and a character identification cover (13); the light source board (12) is fixed to the multifunctional circuit board box (11) by screws ) Middle part; the character identification cover (13) is fixed on the top of the multi-function circuit board box (11) with screws;

[0042] The EEG acquisition headwear (2) includes an elastic headband (21). The elastic headband (21) is ...

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Abstract

The invention discloses a Shuangpin Chinese input system based on steady-state visual evoked potentials. The Shuangpin Chinese input system comprises a Shuangpin input keyboard, an electroencephalogram acquisition headband, a wireless transmission module and an upper computer. According to the system, flash stimulation is performed for a user by the aid of the Shuangpin input keyboard, the user gazes a key position wanting to select, a corresponding steady-state visual evoked potential can be generated, electroencephalogram signals are acquired by the electroencephalogram acquisition headband, transmitted to the Shuangpin input keyboard by the wireless transmission module, processed and encoded, and the processed and encoded signals are transmitted to the upper computer through a USB (universal serial bus), so that Chinese is inputted. The Shuangpin Chinese input system has the advantages of high integration level, easy to operate and convenient to use and can serve as auxiliary means for the disabled using computers.

Description

technical field [0001] The invention relates to a Shuangpin Chinese input system based on steady-state visual evoked potential, which is used for assisting disabled people to input Chinese in a computer, and belongs to the field of human-computer interaction. Background technique [0002] According to the latest statistics from the China Disabled Persons' Federation, the total number of people with disabilities in China has reached 85 million, accounting for about 6.21% of China's total population. In addition, as the population ages, some elderly people are also suffering from paralysis. A considerable number of elderly and disabled people have sound brain functions, but cannot use their body and voice for computer text input. In the Internet age, the difficulty of using computers has a great impact on their quality of life. [0003] Brain-computer interface technology is an emerging technology in the 21st century. This technology directly interacts with external devices t...

Claims

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Application Information

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IPC IPC(8): G06F3/023G06F3/02G06F3/01
CPCG06F3/0233G06F3/015G06F3/0202
Inventor 刘鹏李岩隗英范莹莹
Owner XIDIAN UNIV
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