Portable Impedance Biosensing Detector

Abstract

A portable impedance bio-sensing detector comprises a control module (1), an IO expansion module (2), a display module (3), an impedance measuring module (4), a power supply module (5), a communication module (6), a voltage sampling module (7), a data storage module (8), a clock module (9), a sound module (10) and a system state indicating module (11). The control module (1) is connected to the IO expansion module (2), the display module (3), the impedance measuring module (4), the communication module (6), the voltage sampling module (7), the data storage module (8) and the clock module (9). The IO expansion module (2) is connected to the display module (3), the impedance measuring module (4), the communication module (6), the sound module (10) and the system state indicating module (11). The present invention is convenient to carry and capable of being extensively applied in various biological impedance analysis occasions.

Description

technical field [0001] The invention relates to the field of impedance detection, in particular to a portable impedance biosensing detector. Background technique [0002] In recent years, the problem of food safety has become more and more prominent, and has become a worldwide public health hotspot. Therefore, food safety rapid detection instruments are getting more and more attention. As a new technology, biosensor has the advantages of good selectivity, fast detection speed and high sensitivity, and has been widely used in agriculture, food, medicine and health and other fields. Because its detection accuracy is between large laboratory analysis instruments and conventional rapid methods represented by test strips, and it is easy to carry and can be quickly detected on-site, it is very suitable for rapid screening of food safety to ensure people's physical and mental health and life safety. Maintain social stability and prosperity, and promote economic and trade developm...

AI Technical Summary

Problems solved by technology

The device has the advantages of being small and portable, but there are still some problems in the device: if the analog signal of the impedance detection is connected to the detection electrode without pre-processing, it is easy to affect the biological material on the detection electrode and cause the measurement result Inaccurate and poor stability of the detection signal; in addition, because the device uses a single excitation frequency, it cannot work normally in multiple frequency bands, especially at lower measurement frequencies; there is no battery charging management function, and ordinary batteries cannot be charged As a result, the use time is short and it is not suitable for long-term work; it cannot communicate with computers without serial ports but has USB ports, Bluetooth or TCP / IP network interfaces, and cannot print the measured data in real time on the testing instrument; it cannot display Chinese and graphics , and the backlight of the liquid crystal display cannot be turned off to save power; there is no time and date circuit function, so parameters such as the measurement date of the test sample cannot be displayed

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