| Abstract [eng] |
The master thesis work involves the study of a medical condition called edema, commonly known as swelling. Edema occurs when excess fluid gets trapped in body cells and tissues. An overview of causes of edema, severity of edema, methods used by doctors presently for detection are covered in the report. At present, there is no standard procedure for detecting edema. Purpose of this study is to develop a simple non-invasive model which can possibly detect the condition. The non-invasive technique used in this work is optical method. An Infrared light emitting diode and a phototransistor pair is used as the sensor. This reflective optical sensor pair is used to acquire data from normal body and swollen body members. The optical sensor pair, TLC556 timer and a digital oscilloscope is used to acquire the signals. Pig meat is used as normal body and swollen body members for performing experiment, with the former being the reference signal and the latter being sample signal. Difference between the reference and sample signals is used as a possibility to detect edema. |
