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Current detection circuit, calibration method and device of a blood glucose meter

A technology for detecting circuits and blood glucose meters, applied in the field of circuits, can solve problems such as high price and complicated calibration process, and achieve the effect of avoiding the effect of partial pressure

Active Publication Date: 2020-02-04
SINOCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there are many analog switches, the calibration process is very complicated. Another way is to use analog switches with very low on-resistance to ignore the effect of voltage division, but the price is very expensive.

Method used

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  • Current detection circuit, calibration method and device of a blood glucose meter
  • Current detection circuit, calibration method and device of a blood glucose meter
  • Current detection circuit, calibration method and device of a blood glucose meter

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] Please refer to figure 2 , figure 2 A circuit diagram of a blood glucose meter current detection circuit provided by an embodiment of the present invention; the circuit may include: an operational amplifier 10, a feedback resistor 20, a voltage detection device 30, a preset number of electrode interfaces 40, and each electrode inter...

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Abstract

The invention discloses a detection circuit of glucometer current. The detection circuit comprises an operational amplifier, a feedback resistor, a voltage detection device, a preset number of electrode interfaces, and a first analogue switch and a second analogue switch which are closed or opened at the same time corresponding to each electrode interface. According to the detection circuit, thatcurrent does not flow through the first analogue switch according to an operating principle of the operational amplifier when any one electrode interface is closed corresponding to the first analogueswitch and a second analogue switch which are switched on / off simultaneously at the same time can be known, that is, partial pressure influence does not exist, so that the partial pressure influence produced by a conducting resistor of the analogue switch is avoided. In addition, the invention further discloses a calibration method and device of the glucometer current, which also have the benefits.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a detection circuit, a calibration method and a device for a blood glucose meter current. Background technique [0002] With the development of science and technology in modern society, blood glucose meter products have been widely used by people, such as medical blood glucose meter products and household blood glucose meter products. These blood glucose meter products often use operational amplifiers to realize current-voltage conversion by measuring the current signal of blood glucose test strips. [0003] In the prior art, the measurement of the multi-electrode blood glucose test strip needs to be realized by multiple circuits, or realized by switching through analog switches. However, the measurement of multi-electrode blood glucose test strips is realized by switching the analog switch, because the on-resistance of the analog switch will have a voltage division effect, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/416
Inventor 田时雨
Owner SINOCARE
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