Universal portable detector for electrochemical biosensor

Abstract

A universal portable detector for an electrochemical biosensor takes a microcontroller integrating functions of digital-to-analog conversion and analog-to-digital conversion together as a core, wherein, a peripheral circuit comprises a power management module, a constant potential module, an E<2>PROM memory, a clock manager, a temperature sensor, a buzzer, a keypad input module and an LCD module;and the universal portable detector can be matched with the common varied electrochemical biosensors with a three-electrode system or a two-electrode system, particularly a chip of the small-sized orminiature electrochemical biosensor to realize chronoamperometry, chronocoulometry and multiple voltammetry detection functions, and meanwhile the detector can perform temperature correction on a detection result. The universal portable detector takes high integration level, low power consumption and practicability as a design principle; the detector has small volume and convenient power supply with a battery, thus having portability; and the detector is applicable to on-spot analysis in the fields such as medical detection, food security, environmental protection and the like, thus meeting the requirement for fast detection.

Description

technical field [0001] The invention relates to a sensor detector, in particular to a general-purpose portable detector for electrochemical biosensors, which belongs to the technical field of biochemical analysis instruments. Background technique [0002] In the fields of medical testing, food safety, and environmental protection, the requirements for analytical testing methods and instruments tend to be more and more portable, fast, low-cost, and easy to operate. In some occasions, on-site testing or online real-time monitoring must be realized. However, many existing methods still rely on large and expensive experimental instruments, which require long analysis and detection time, high cost, and high skill requirements for operators. Can not well meet the needs of practical applications. An electrochemical biosensor is a sensor that directly converts biochemical reaction information into easily measured current or voltage signals. In addition to the characteristics of hi...

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Problems solved by technology

The detection method adopted by the blood glucose meter is the potentiostatic chronoamperometry or the electric quantity method. The excitation voltage parameters are set by the hardware, and the instrument is highly specialized. Almost every type of blood glucose meter can only use a specific electrode test paper.

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