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A Method of Measuring Alertness Based on EEG Frequency Domain Feature Indexing Algorithm

A technology of frequency domain characteristics and alertness, applied in diagnostic recording/measurement, medical science, psychological devices, etc., can solve problems such as being susceptible to interference, and achieve the effects of high measurement accuracy, precise extraction and processing

Active Publication Date: 2015-08-05
广州爱生科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since EEG is a very weak electrical signal (microvolt level), the process of recording in the actual environment is easily disturbed, and it is possible to extract stable indicators of fatigue and sleepiness and apply it very conveniently to real life or work. In the technology, there is no literature or patent report

Method used

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  • A Method of Measuring Alertness Based on EEG Frequency Domain Feature Indexing Algorithm
  • A Method of Measuring Alertness Based on EEG Frequency Domain Feature Indexing Algorithm
  • A Method of Measuring Alertness Based on EEG Frequency Domain Feature Indexing Algorithm

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Embodiment Construction

[0042] Such as figure 1 As shown, it is a structural schematic diagram of the hat of the present invention, including a hat, an EEG signal acquisition device, an IC circuit, a signal transmission device and a terminal device, and the EEG signal acquisition device includes an EEG signal acquisition electrode and an EEG signal reference electrode. The acquisition device samples and quantifies the brain waves generated by human brain activity, turns them into discrete digital signals, and performs subsequent processing; the two electrodes are integrated with the hat, and in order to collect EEG signals more accurately, the EEG signal acquisition electrodes Located on the head, the EEG signal reference electrode clip is located on the ear.

[0043] The IC circuit includes a signal amplifier and a signal processor. The signal amplifier is a pre-signal amplifier, which amplifies the quantized digital signal and enhances the anti-interference ability during processing and transmissio...

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Abstract

The invention relates to a hat and a method for measuring alertness based on the EEG frequency-domain feature indexing algorithm. The hat comprises an EEG acquisition device, an IC, a signal transmission device and a terminal device. The EEG acquisition device is used for sampling and quantitating analog brain waves from brain activities to obtain discrete digital signals, and perform subsequent treatments. A signal amplifier amplifies the digital signals quantitated to enhance anti-jamming capacity in the treatment and transmission process. A signal processing unit is used for pre-denoising the acquired signals to enhance intensity of EEG, and extracting calculation indexes, indicating changes in human cognitive states, from the signals, to estimate the status of a user. The signal transmission device is connected with the IC and the terminal device. The terminal device is a PC, used for processing the calculation indexes and displaying and feeding back. The hat and the method having high measurement precision are applicable to various work environments.

Description

technical field [0001] The invention relates to a method for measuring alertness based on an EEG frequency domain characteristic index algorithm. Background technique [0002] It has long been known that EEG can reflect people's attention or fatigue, and related technologies in the laboratory environment are also very mature. Knowing whether the subject is awake is of great significance in many occasions, such as classrooms and factory workshops, etc., especially in the driving environment, when the user is sleepy and in a state of inattention, he can immediately call the police or give a reminder. However, since EEG is a very weak electrical signal (microvolt level), the process of recording in the actual environment is easily disturbed, and it is possible to extract stable indicators of fatigue and sleepiness and apply it very conveniently to real life or work. In the technology, there is no literature or patent report. Contents of the invention [0003] The object of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0476A61B5/16
Inventor 刘志勇
Owner 广州爱生科技发展有限公司
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