The Non-invasive Measurement Of Blood Glucose And Its Experimental Study

With the improvement of living standards, the reduction of labor intensity, thechange of lifestyles, people with diabetes are also increasing. Diabetes (diabetesmellitus, DM), is also known as the "silent killer", is the third largest chronicnon-communicable disease, which with a variety of high risk of complications,threatening the health. Many patients lack the proper understanding of diabetes, thecontrol of diabetes has been a great influence. If we can help patients for the healtheducation, which will reduce and avoid diabetes complications, it has greatsignificance to improve the patient’s quality of life.In the near-infrared region (780-2400nm), we can test the concentration ofblood glucose by non-invasive measurement. According to this theory, combiningphotoacoustic measurement principle, the intensity of the photoacoustic signal andthe relations theory of the concentration, we propose a non-invasive method basedon photoacoustic effect. By using lasers, tunable optics, integrated test platform,signal processing modules and data acquisition display device and so on, whichconsisting detection system of testing the concentrations of glucose aqueous.Determining the sound signal which generated by the laser, and discussing theoptimal wavelength in the near infrared region. Making the experiment repeatedly,and fitting the data by the least squares method in order to improve the accuracy ofthe glucose solution.According to such result, anglicizing the experimental systems, optimizing eachhardware units, reducing noise in order to improve signal to noise ratio and get betterexperimental data. Finally, calculating the data and fitting errors, which provedfeasibility of photoacoustic measurement further. However, the experimental systemis not stable enough, the errors relatively large but also the subsequent furtherenhancement and improvement.