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Blood Glucose Meter And Epoxy Resin NTC Temperature Sensor

Time:2022-12-13 Views:45


The principle of the blood glucose meter is to use the glucose in the blood to produce a photochemical reaction with the reagent on the test paper, so as to achieve the purpose of detecting blood sugar. When the blood glucose meter detects that the blood glucose concentration is less than or equal to 4.2nmol/L, the accuracy requires that the allowable deviation does not exceed ±0.83nmol/L; when the blood glucose meter detects that the blood glucose concentration is greater than 4.2nmol/L, the accuracy requires that the allowable deviation does not exceed ±20% . On the one hand, according to the existing standards, there is a large random error in the household blood glucose meter; on the other hand, the blood glucose meter is greatly affected by the environment, especially the temperature has a significant impact on the blood glucose test results. Therefore, it is necessary to install an NTC temperature sensor on the blood glucose meter to monitor the temperature.


The surface of the
 thermistor in the NTC temperature sensor of the blood glucose meter is encapsulated with thermally conductive epoxy resin, and the thermistor is arranged at the front end of the test paper slot, and the test paper can be in thermal contact with the NTC temperature sensor. Insert the test strip into the blood glucose meter, and the back of the blood glucose test strip will be in contact with the NTC temperature sensor. At the same time, the blood glucose meter will automatically turn on. After turning on, the blood glucose meter will first sense the temperature of the test strip through the NTC temperature sensor. At 2°C), the blood glucose meter will wait until the temperature of the test strip of the blood glucose meter is stable, prompting to start dripping blood measurement.


The NTC temperature sensor of the blood glucose meter can sense the temperature of the test paper, and can perform compensation calculation more accurately. After inserting the test paper, by sensing the temperature of the test paper, it is judged whether the temperature of the test paper is stable, and then it is decided whether to measure, which improves the stability and reliability of the blood glucose meter.

 

Reference data:

CN202903801U "A kind of blood glucose meter of high precision temperature compensation"

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