INSTRUMENT FOR MEASURING GLUCOSE CONCENTRATION IN BLOOD

摘要

The goal of the design is a simple and cheap construction of the device for measurement of glucose concentration in the blood. The above-mentioned goal is achieved by the fact that the source of the minimal reference voltage is connected to the non-inverting input of the second differential amplifier. The source of the maximal reference voltage is connected to the non-inverting input of the first differential amplifier. The output of the first differential amplifier connects via the switch to the first input of the comparator and first pole of the condenser of the RC unit. The output of the second differential amplifier is connected to the second pole of the RC unit and its inverting input, along with the inverting input of the first differential amplifier, is connected with the output of the light detector. The output of the comparator is connected with the time-interval meter, whose output connects with the display unit.<IMAGE>