Electrochemical power supply method and device
A power supply method and power supply device technology, applied in the direction of material electrochemical variables, material inspection products, biological testing, etc., can solve problems such as incorrect measurement results, reduce measurement efficiency, prolong measurement time and energy consumption, and achieve improved accuracy And efficiency, reduce the effect of measurement error
Inactive Publication Date: 2013-09-11
MING CHI UNIVERSITY OF TECHNOLOGY +2
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At this moment, if the measuring voltage 13 that rises suddenly is supplied, the measuring current 27 will have an unstable overcurrent 25 (overshooting) phenomenon, which will affect the waveform of the measuring current 27 and the value of the measuring current 27 measured at the time point t1, Inaccurate measurement results
And if the reaction result will not have too much deviation, although the measurement can be performed when the measurement current 27 is relatively stable, this will inevitably prolong the measurement time and cause energy consumption, reducing the efficiency of measurement
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[0048] By providing a reset voltage signal to eliminate impurity reactions to reset the electrochemical reaction before the reactants to be tested start to react, and provide a gradually rising measurement voltage to generate a stable measurement current during measurement, to improve the accuracy of the measurement results correctness and efficiency.
[0049] Please refer to figure 2 , is a block diagram of an embodiment of a biosensor, including a processing unit 31 , a voltage supply unit 33 , an electrochemical reaction zone 35 , and a current measurement unit 37 . Wherein the electrochemical reaction area 35 is pre-placed with active substances, enzymes or antibodies for chemical reaction with a reactant to be tested. For example, if the biosensor is a blood glucose meter, the electrochemical reaction area 35 is set at one end of the concentration test strip (a blood glucose test strip in this embodiment) for the user to drip blood for blood glucose concentration analys...
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The invention provides an electrochemical power supply method and device which are applied to measuring the concentration of a reactant to be measured in a specimen to be measured. The method comprises the following steps: firstly supplying an initial voltage to an electrochemical reaction zone so as to detect whether the specimen to be measured is embedded into the electrochemical reaction zone; if yes, stopping supplying the initial voltage, providing waiting time so that the electrochemical reaction zone is filled with the specimen to be measured, and then supplying a reset voltage signal to the electrochemical reaction zone so as to reset the chemical reaction in the electrochemical reaction zone; supplying a reaction voltage to the electrochemical reaction zone, and supplying gradually raised measuring voltages to the electrochemical reaction zone after reaction so as to generate stable measuring current; and finally measuring and converting the numerical value of the measuring current so as to obtain the concentration of the reactant to be measured in the specimen to be measured.
Description
technical field [0001] The invention relates to a power supply method and its device, in particular to a voltage supply method and its device for an electrochemical reaction. Background technique [0002] With the development of biosensing technology, many biosensing devices combined with biological characteristics and electronic technology have been invented one after another, such as blood glucose meter, blood lipid meter, uric acid meter, or cholesterol meter, etc., which use active substances and treat The change of physical or chemical properties caused by the reaction of the test substance is used to measure and convert the amount of the test substance to achieve the purpose of measurement. [0003] According to the difference in measurement equipment and methods, generally speaking, the types of biosensors include electrochemical biosensors, semiconductor ion sensors, optical fiber biosensors, piezotransistor biosensors, and so on. Among them, the electrochemical bio...
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IPC IPC(8): G01N27/26G01N33/66
Inventor 史德智许礼汎王殿臣洪国永阮弼群
Owner MING CHI UNIVERSITY OF TECHNOLOGY