Abstract
A new application of MQ-138 semiconductor sensor for breath acetone detection is proposed in this work. MQ-138 semiconductor sensor was integrated to a system which consists of three blocks. This system offers benefits such as portable, fast and easy to operate. Experiments with breath acetone samples from both diabetes and nondiabetes patients validated the accuracy of this system. Based on the measurement results, it was found that as the sensor output voltage increased, the higher blood glucose values measured which means it has been proven that sensor readings of MQ-138 sensor has linear relation to the breath acetone. Therefore, the proposed system has a potential to be used for breath acetone detection in diabetes patients as a new application of MQ-138 semiconductor sensor.
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