Detection equipment based on biomedical electrical impedance tomography technology and health risk assessment system of detection equipment

Abstract

The invention provides detection equipment based on a biomedical electrical impedance tomography technology. The detection equipment comprises a plurality of electrodes and a data acquisition cabin, wherein a data acquisition circuit board is arranged in the data acquisition cabin; an analog signal input circuit, an analog-to-digital conversion chip and a digital signal output circuit are arrangedon the data acquisition circuit board; the analog signal input circuit is sequentially provided with a multi-path change-over switch, an amplifier, a synchronous demodulator and a plurality of pathsof analog signal input lines; a read signal input pin and a chip selection signal input pin of the analog-to-digital conversion chip are connected with an active crystal oscillator; and the digital signal output circuit is provided with a plurality of paths of parallel data transmission lines. The invention further provides a health risk assessment system based on the detection equipment. The health risk assessment system provided by the invention has the advantages of higher speed and higher accuracy in data acquisition and conversion and higher stability in data acquisition and conversion, and an assessment result is more accurate.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a health risk assessment system based on biomedical electrical impedance imaging technology. Background technique [0002] Biomedical electrical impedance imaging technology (Electrical Impedance Tomography, EIT) uses the difference in impedance between different tissues and organs of the human body or the same tissue and organ under normal and pathological conditions, and simultaneously measures the body surface voltage or current by applying a safe excitation current or voltage to the surface of the human body. It is a technology to know the distribution of the internal electrical parameters of the human body by using signals, and then reconstruct an image reflecting the internal structure of the object, so as to intuitively see the real-time health status of the tissues and organs of the whole body, and to judge and prevent diseases earlier. [0003] Existing various...

AI Technical Summary

Problems solved by technology

[0003] Existing various detection equipment based on EIT technology still have limitations such as insufficiently stable detection results and slow detection speed, and the existing data acquisition controllers are all completed on-site in the data collector or data acquisition warehouse After the data is collected, it is processed on-site, and then the results are presented or uploaded to the data center. In this way, if the amount of on-site data is large, the amount of calculations to be processed is large, and the processing process is complicated, a single-chip microcomputer with powerful processing capabilities must be used, and an external DSP must be installed if necessary. (digital signal processor)

This not only wastes the cost, but also consumes a lot of computing and processing time, which is not conducive to widespread promotion and application.

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