Data synchronization method of electroencephalogram device and electroencephalogram device

An EEG device and data synchronization technology, which is applied in the field of bioinformatics, can solve the problems of slow transmission speed, difficulty in synchronous acquisition of multiple stimulation systems, complicated transmission process, etc., and achieve the effect of avoiding delay

CN113143290APending Publication Date: 2021-07-23西安臻泰智能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-07-23

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Abstract

The invention discloses a data synchronization method of an electroencephalogram device and the electroencephalogram device, and the method comprises the steps: a central processing system sends an instruction to each subsystem through a first wireless communication protocol, so as to complete the synchronization of each subsystem; an acquisition subsystem acquires data information and transmits the data information at a preset frequency, adds a first timestamp corresponding to the data information into a data packet, and sends the first timestamp and the data information to the central processing system; a marking subsystem sends a second timestamp of a moment corresponding to an event generation signal according to the event generation signal transmitted by the central processing system through a second wired communication protocol; the central processing system receives a data packet sent by the acquisition subsystem through a second wireless communication protocol, and obtains a current second timestamp from the marking subsystem through the wired communication protocol, the first wireless communication protocol or the second wireless communication protocol; and aligning the data points corresponding to a second timestamp according to the second timestamp acquired from the marking subsystem.
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Description

technical field

[0001] Embodiments of the present invention relate to the field of biological information technology, and in particular, to a data synchronization method for an EEG device and the EEG device. Background technique

[0002] Event-related evoked potential (ERP) is an electroencephalogram (EEG) induced by a specific stimulus, which can reflect the neurophysiological changes in the cognitive process of the brain under the stimulus. In the process of EEG signal acquisition, events and data often have a strict time-locked relationship, such as event-related evoked potentials (ERPs) and phase-related steady-state visual evoked potentials. Therefore, while recording the EEG data, it is necessary to accurately record the time when the event occurs, and the time error between the event and the data is required to be within ±1ms.

[0003] Existing synchronization methods mainly include two types: one is digital wired synchronization, specifically: the event generator ca...

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0051] figure 1 is a schematic structural diagram of an EEG device provided by an embodiment of the present invention, such as figure 1 As shown, the EEG device 100 provided by the embodiment of the present invention includes a central processing system 10, a marking subsystem 20 and at least one acquisition subsystem 30, wherein, figure 1 The description is made by taking the EEG device 100 including two acquisition subsystems 30 as an example. The central processing system 10 is configured to send instructions...