Multichannel human body skin potential acquiring system

Abstract

The invention discloses a multichannel human body skin potential acquiring system which comprises a power supply module, a multichannel selection module, a pre-amplification module, a shield module, a filter module, a 50Hz trap module, a post-amplification module, an AD conversion module, an SD (Serial Digital) card storage module and a main control module, wherein an acquisition electrode and a reference electrode are accessed into the multichannel selection module, and then accessed into the pre-amplification module for amplification after being subjected to strobing through the multichannel selection module, interference signals are filtered by using the filter module, and common-mode interference of an input stage is inhibited by using the shield module; filtered signals enter the post-amplification module after passing through the 50Hz trap module, the output of the post-amplification module is connected with the AD conversion module and written into the SD card storage module according to a certain format by the main control module; and the main control module controls the working process of the whole acquiring system. The invention provides a system for acquiring electric signals excited by all organs and tissues on the skin of a human body so as to replace an acquiring instrument being only suitable for electrocardio in the prior art.

Description

technical field [0001] The invention belongs to the technical field of human bioelectricity collection, and in particular relates to a collection system for collecting electrical signals excited by various organs and tissues on human skin, rather than a specific electrical signal. Background technique [0002] When living cells, tissues or organs are excited, no matter how different their external manifestations are, they are accompanied by electrical changes, which is also the reason for the generation of electrical signals in the human body. These bioelectrical signals can be recorded and analyzed by instruments, and important information can be obtained. So far, EEG and ECG have been widely used in medicine and scientific research. These specific electrical signals have a certain frequency bandwidth and potential size range. The corresponding measuring instruments such as EEG and ECG They are all collected for a certain potential. The skin potential of the human body ne...

AI Technical Summary

Problems solved by technology

Since the relevant research on human skin potential has just emerged, there is no special acquisition equipment at present. The simple method generally used is to replace it with an acquisition instrument suitable for ECG, but this only collects the signal within the range of ECG in the skin potential. , so the result is inaccurate

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