Survey of Wearable EEG and ECG Acquisition Technologies for Body Area Network

With the development of the wireless body area network, the demand for medical monitoring is getting higher and higher. A series of wearable devices have now emerged as a means of medical monitoring to detect human bioelectrical signals. This article mainly contains three parts, which are wireless body area network, Electrocardiograph(ECG) signal and Electroencephalogram(EEG) signal acquisition, and the design of wearable acquisition system based on wireless body area network. The first part starts with the performance requirements of the wireless body area network, introduces the performance required for medical monitoring, emphasizes the transmission reliability, and focuses on the key issue of wireless body area network research - energy conservation. The second part introduces the non-contact sensor, and expounds the selection of electrode materials. The design of the acquisition circuit and noise cancellation are mainly discussed. The third part puts forward the structural design of the wearable acquisition system based on wireless body area network, and expounds the data transmission system of the system. Finally, it puts forward suggestions and ideas for the design of body-area network-based wearable EEG and ECG acquisition systems.