Design of Micro Bioelectric Signal Acquisition System

The micro bioelectrical signal acquisition system was mainly used for small animals in the free movement of electrical signal acquisition. Biological electrical signals were obtained by implanting electrodes. These signals were written into the SD card after filtering and two-stage amplification. The collected signals were analyzed and extracted by PC, and the information of different parts was compared, so as to infer various biological behaviors. The signal acquisition system could change the type of biological object by changing the electrode type and some resistance and capacitance elements, which had good versatility. By collecting and analyzing the pigeon's brain nerve signal and human muscle signal, the reliability of the electrical signal acquisition system was verified.