SSVEP-based critical patient intention expression system and method

An expression system and expression method technology, which is applied to the SSVEP-based intention expression system and field of critically ill patients, can solve problems such as adverse effects of diagnosis and rehabilitation, patient dissatisfaction and resistance, time-consuming and labor-intensive problems, and achieve good human-computer interaction functions and convenient nursing care and the effect of treatment

Pending Publication Date: 2019-07-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional method of expressing the patient's intentions through the notepad reminder card is time-consuming and laborious. The patient's family members and medical staff may not be able to quickly and accurately grasp the patient's needs at the moment through repeated inquiries, so that they cannot quickly solve the problems encountered by the patient. It may cause dissatisfaction and resistance of patients, which will adversely affect subsequent diagnosis, treatment and rehabilitation

Method used

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  • SSVEP-based critical patient intention expression system and method
  • SSVEP-based critical patient intention expression system and method
  • SSVEP-based critical patient intention expression system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0050] see figure 1 , this SSVEP-based intention expression system for critically ill patients includes a computer, an electrode cap, a signal amplifier, a router, and a trigger box. Connection, the electrode cap is connected to the signal amplifier through wires, and the signal amplifier is connected to the computer wirelessly through a router; first, the medical staff puts the electrode cap on the patient and instructs the patient to look at the intention expression interface. At this time, the electrode cap collects the patient’s EEG signal, After being amplified by the signal amplifier, it is wirelessly transmitted to the SSVEP decoding unit through the router. When the trigger box detects that the refresh rate of the computer screen is 60Hz, the SSVEP decoding unit is enabled to decode the patient’s EEG signal. After decoding, the patient’s intention is converted into a corresponding Control instructions to achieve audio-visual feedback.

Embodiment 2

[0051] Embodiment two, this embodiment is basically the same as embodiment one, and the special features are as follows:

[0052] The electrode cap adopts Boruikang 32-channel electrode cap to collect the patient's EEG signal. The signal amplifier amplifies the EEG signal collected by the electrode cap, and wirelessly transmits the amplified EEG signal to the SSVEP decoding unit through the router. The router generates a wifi local area network, and the medical personnel connect the signal amplifier and the computer to the local area network; after successful connection, the router transmits the EEG signal to the SSVEP decoding unit. When the trigger box detects that the flickering frequency of the computer screen is 60 Hz, the trigger box transmits a pulse signal to the computer through a USB cable to enable the SSVEP decoding unit.

Embodiment 3

[0054] The structural block diagram of the intention expression system for critically ill patients based on SSVEP of the present invention is as follows figure 1 As shown, the whole system includes a computer (1), an electrode cap (2), a signal amplifier (3), a router (4) and a trigger box (5), wherein the computer (1) includes an intent expression interface (6) and a SSVEP decoding unit (7). see Figure 4 , Figure 5 , firstly, the medical staff helps the patient put on the electrode cap (2), and opens the intent expression interface (6), the patient looks at the corresponding block on the intent expression interface (6) according to his own needs, and the electrode cap (2) collects the patient’s At this time, the EEG signal is amplified by the signal amplifier (3) and then wirelessly transmitted to the SSVEP decoding unit (7) for decoding by the router (4). A border is added to the picture block, and the corresponding text prompt is displayed in the text box on the top of...

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Abstract

The invention relates to an SSVEP-based critical patient intention expression system and method. The system comprises a computer (1), an electrode cap (2), a signal amplifier (3), a router (4) and a trigger box (5). The method is characterized by comprising the following steps of: firstly, a medical worker helps a patient to wear the electrode cap (2); opening an intention expression interface (6)at the computer (1) end; patient according to own needs, watching a corresponding block on the intention expression interface (6); the electrode cap (2) collects an electroencephalogram signal of thepatient at the moment; the signal is amplified by the signal amplifier (3); wireless transmission to the SSVEP decoding unit (7) is realized through the router (4); and when the trigger box (5) detects that the refresh frequency of the computer screen is 60Hz, the SSVEP decoding unit (7) is enabled to decode the electroencephalogram signal, and after the decoding is successful, the intention of the patient is converted into a corresponding control instruction, so that visual and auditory feedback is realized, and the intention of the patient is expressed.

Description

technical field [0001] In this paper, a SSVEP-based intention expression system and method for critically ill patients is designed. The system includes a computer, electrode cap, signal amplifier, router, trigger box, intention expression interface, and SSVEP decoding unit to realize the intention expression of critically ill patients. With the characteristics of users actively participating in intention expression and audio-visual feedback, it can provide more convenient and quick monitoring, diagnosis and treatment for critically ill patients. Background technique [0002] The brain-computer interface is a direct information communication and control channel established between the human brain and computers or other electronic devices. . SSVEP is a kind of steady-state evoked potential, which has the advantages of high information transmission rate, no training and no damage, making SSVEP a valuable input signal for BCI. How to develop a practical application system base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01G16H40/63
CPCG06F3/015G16H40/63G06F2203/011
Inventor 杨帮华谢允龙
Owner SHANGHAI UNIV
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