Portable physiological index detector based on micro fluidic paper chip and detection method thereof

Abstract

The invention relates to a portable physiological index detector based on a micro fluidic paper chip and a detection method thereof. The portable physiological index detector comprises a detected physiological index sample, a micro fluidic paper chip, a voltage follower module, a voltage amplifier module, an A / D transition module, and a single-chip microcomputer module which are connected in order, the single-chip microcomputer module is respectively connected with a button module, a display module and a voice module, which can effectively solves the problems of measurement error due to detection of the physiological index by the micro fluidic paper chip. The portable physiological index detector has the advantages of ingenious conception, humanized design and easy carrying, the novel micro fluidic paper chip is used for detecting the uric acid concentration, a potential signal generated after a biochemical reaction is subjected to voltage following, voltage amplification, and AD transition to a digital electric signal, the digital electric signal is sent to a STM32-series single-chip microcomputer or intelligent analysis and processing, detection result can be rapidly obtained and displayed on a screen, relative high concentration, relative low concentration or normal measurement result can be prompted by the system by comparing with a health standard, and the portable physiological index detector has market development potential.

Description

technical field [0001] The invention relates to the fields of biological science and medical engineering, in particular to a portable physiological index detector based on a microfluidic paper chip and a detection method thereof. Background technique [0002] Microfluidic paper chip technology integrates the basic operation units such as sample preparation, reaction, separation, and detection in the process of biological, chemical, and medical analysis into a micron-scale chip, and automatically completes the whole process of analysis, that is, microfluidic paper chip It is a special kind of electrochemical biosensor. [0003] Electrochemical biosensors generally use conductive ions as the basic medium to convert target physiological signals into electrical or physical signals such as current and potential. Prospects. [0004] In the design of electrochemical sensors, according to the different measurement signals, they can be divided into current type, conductivity type, ...

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Problems solved by technology

[0010] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a portable physiological index detector and its detection method based on the microfluidic paper chip, which effectively solves the problem of using the microfluidic paper chip to detect the physiological index. error problem

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