Electrical impedance scanning detection system and method of real-time multi-information extraction

Abstract

The invention discloses an electrical impedance scanning detection system for the withdrawal of real-time multi-information and the method thereof, wherein, the system comprises a PC machine, a data transmission interface module, a microprocessor, a control module, a data acquisition module, a preceding stage detection module, an excitation source and an exciting electrode; wherein, a detecting electrode array withdrawals a detection signal and sends the detection signal to the preceding stage detection module, the detection signal is sent to an A / D converter and a data buffer memory module corresponding to a data acquisition unit after passing through a current and voltage conversion module through a multiple way switch; the date buffer memory module enters into the microprocessor; the PC machine performs the data transmission, delivers a control command or revives date through the transmission interface module and a microprocessor module; a software with supporting data analysis, curve description, image display and information prompt is arranged in the PC machine; thereby obtaining the real-time electrical impedance information of a measured target body, the multiple frequency impedance information and the impedance property. The invention has the advantages that the detection accuracy is high, the processing speed is rapid, and the noise resistance ability is strong.

Description

technical field [0001] The invention belongs to the field of biological tissue electrical impedance detection, in particular to a real-time electrical impedance scanning imaging detection system and method capable of extracting various electrical impedance information. Background technique [0002] Biological tissue electrical impedance scanning detection is to apply a certain excitation voltage to the target body through the excitation electrodes, and the corresponding array detection electrodes detect the surface current of the measured area, and analyze the difference of the current on the detection electrode unit to obtain the internal resistance of the measured area. Anti-distribution. This detection method is usually used to measure a target with a large difference in electrical impedance in internal tissues, and then obtain electrical impedance information of different tissues. [0003] Due to the limitation of the area of ​​the detection electrode array, the electri...

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Problems solved by technology

[0004] Although the current electrical impedance scanning imaging system can obtain imaging of the target site at multiple frequencies, it does not analyze the electrical impedance spectrum characteristics of the measured area, that is, the relationship between these multi-frequency imaging results is not very good. The reflection of the electrical impedance spectrum of the tissue is important information to identify different tissues, so it is necessary to analyze the multi-spectral characteristics of the electrical impedance of the measured target site

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