Electroencephalogram acquisition system based on ADS1299, STM32 and ESP8266

An acquisition system and EEG technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as expensive, intertwined wires, and high requirements for the working environment

Pending Publication Date: 2021-08-20
张磊
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For many years, the collection of EEG signals has been transmitted in a wired manner. Although it has the characteristics of high stability, with the continuous improvement of EEG acquisition technology, the wired transmission method can no longer meet the requirements of researchers.
The way of wire

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  • Electroencephalogram acquisition system based on ADS1299, STM32 and ESP8266
  • Electroencephalogram acquisition system based on ADS1299, STM32 and ESP8266
  • Electroencephalogram acquisition system based on ADS1299, STM32 and ESP8266

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Embodiment Construction

[0017] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] The overall framework of an EEG acquisition system based on ADS1299, STM32 and ESP8266 of the present invention is as follows: First, use a standard EEG cap to collect 8-channel analog signals, and use 24-bit high-precision analog front-end ADS1299 to obtain high-resolution. Then the digital signal is transmitted to the main control module with STM32F103ZET6 as the core through the SPI interface. The main control module can control the ADS1299 through the SPI bus, and at the same time transmit the digital signal to the NodeMCU through the SPI interface, and the NodeMCU transmits it to the host computer through the Wi-Fi module, and the host computer can display and ...

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Abstract

The invention relates to the technical field of medical equipment, and particularly relates to an electroencephalogram acquisition system based on ADS1299, STM32 and ESP8266. The electroencephalogram acquisition system has the characteristics of simplicity, easiness in use and high precision, can provide guarantee for further electroencephalogram research, and comprises an analog front end, a microcontroller, a wireless module and an upper computer, wherein the analog front end adopts an ADS1299 integrated chip and is used for receiving an electroencephalogram signal subjected to low-pass filtering preprocessing, carrying out filtering, amplification and analog-to-digital conversion on the electroencephalogram signal and meanwhile, sending the processed electroencephalogram signal; the microcontroller adopts STM32F103 and is used for receiving the electroencephalogram signal processed by the analog front end, carrying out data processing on the read electroencephalogram signal and meanwhile, sending the processed data; the wireless module adopts a NodeMCU and is used for receiving the processed data sent by the microcontroller and transmitting the data to the upper computer through Wi-Fi communication; and the upper computer is used for receiving the data sent by the wireless module and analyzing, processing and displaying the data.

Description

technical field [0001] The present invention relates to the technical field of medical equipment, in particular to an EEG acquisition system based on ADS1299, STM32 and ESP8266. Background technique [0002] The EEG signal is usually a weak sine wave with an amplitude between 0.5-200uV, so the acquisition of the EEG signal requires a high multiple of amplification. When the brain receives external stimuli, thinks, or changes in physical state, the frequency and amplitude of brain waves will change. When receiving external stimuli, the human brain will respond quickly within 1 second and generate complex brain wave signals. Therefore, EEG acquisition equipment must have sufficient precision and timely response capabilities; [0003] For many years, the collection of EEG signals has been carried out in a wired way. Although it has the characteristics of high stability, with the continuous improvement of EEG collection technology, the wired transmission method can no longer m...

Claims

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Application Information

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IPC IPC(8): A61B5/369A61B5/386
CPCA61B5/7203A61B5/7225
Inventor 张磊王美怡孙逍遥李茜秦文静秦川苏成刘奥赵宇盛王泽睿粟优
Owner 张磊
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