Wireless portable multichannel electroencephalogram signal acquisition system

Abstract

The invention relates to a wireless portable multichannel electroencephalogram signal acquisition system. The wireless portable multichannel electroencephalogram signal acquisition system comprises an acquisition electrode, a filter network, an AD8232 module, an AD7606 module, a microprocessor module, a serial module, a liquid crystal module, an SD card module, a WIFI module and a power module. The acquisition module comprises a reference electrode and an active electrode; the filter network comprises a filter circuit and a protection circuit; the AD8232 module is used for acquiring, amplifying and filtering a weak electroencephalogram signal; the AD7606 module is used for transforming an electroencephalogram analog signal obtained through preprocessing into a digital signal; the microprocessor module is used for digitally filtering the digital signal of the AD7606 module and transmitting the data to the WIFI module in real time; and the serial module is used for data communication with a PC computer. The wireless portable multichannel electroencephalogram signal acquisition system is high in resolution ratio of the electroencephalogram signal, is not affected by external factors like field and environment, and has very high universal performance.

Description

technical field [0001] The invention relates to the field of EEG acquisition systems and equipment, in particular, a wireless portable multi-channel EEG signal acquisition system is designed. Background technique [0002] In the early 19th century, the study of EEG signals began to develop. However, due to the backwardness of experimental equipment and research technology, it is impossible to accurately collect the required EEG signals, which makes the progress of EEG research slow. In the middle of the 20th century, scientists developed an electro-mechanical processing device for averaging instantaneous brain evoked potentials, creating a new era of EEG signal recording technology. With the continuous development of computer technology, neuroscience, biological technology, and brain-computer interface technology (BCI), the research on EEG signals is becoming more and more mature. [0003] The EEG signal is very weak, with an amplitude range of 5 ~100, the frequency rang...

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Problems solved by technology

However, due to the backwardness of experimental equipment and research technology, it is impossible to accurately collect the required EEG signals, which makes the progress of EEG research slow

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