Design of a non-invasive diabetes measurement system using impedance plethysmography

Abstract

Measuring the bioelectrical impedance value for a human tissue can be used to determine many vital variables as fat ant salt inside the body tissue, some recent studies suggest there is a relationship between the bioelectrical impedance and the percentage of glucose in the blood, therefore this opens the way for the development of a new techniques for determining the blood glucose percentage by measuring the bioelectrical impedance. This project includes three phases: The first phase is a design a system to measuring the rate of diabetes in the blood non-invasively (without need to the blood sample ), through the using of bioelectrical impedance technique, this system depends on using of constant current source that passes the current from one point to another on the human body, then we have to measure the voltage difference between these two points, next we have to measure bioelectrical impedance between them by using ohms law. The second phase includes the construction of mathematical equation describe the relationship between obtained values by the bioelectrical impedance system and the obtained values by traditional system, this must done by examination the diabetes for a sample of patients (ranging from 30 to 40 patients) by the two systems to build tables that compare between the two system values and then analyze these tables by numerical analysis laws in order to derive a mathematical equation describes the relationship between the two systems. The third phase includes the showing of the measurement result by substitution the values of our system in the mathematical equation that we have obtained in the previous phase.