Implementation of Abdominal Displacement Measuring Device

To indirectly check internal organs movement, the researcher implemented displacement measuring system that can measure abdomen and chest movements. In this paper, the abdominal movements due to necessary living body activities like respiration, etc were used as signal sources. To extract the physical quantity from abdominal expansion or contraction, a spring belt was mounted on the abdomen of the subject and the changes in the spring belt by intestinal organs movement was recorded. The abdominal displacement measuring device implemented using displacement sensor, with a mark attached on the abdomen, was compared with displacement measurement system implemented through trace-back method using CCD camera. As a result, for displacement detection, the two system showed similar pattern. However, the displacement measurement using carmera overcome the inability to mreasure real time due to lapse of time for video processing as the experiment time gets longer. Consequently, it appears that the abdominal data of quanitized abdominal displacement data acquired using the abdominal displacement measurement device implemented as such will give an estimation of the movement inside the intestine.