Triaxial magnetometer, tesselated model of the thoracabdominal cavity during breathing

A tesselated model to describe the configuration of the thoracabdominal cavity of the body during breathing is proposed. These measurements of surface areas and volumes are intended to describe the pattern of ventilation in health and disease. The orthogonal coordinates of sensors placed on the body are measured by a triaxial electromagnetic magnetometer. Results have shown that although an eight sensor tesselated model is relatively accurate for estimation, more sensors are required to accurately describe the thoracabdominal cavity. In addition, the current instrument has a low data rate and reduced frequency response. A multiprocessor digital receiver for the triaxial magnetometer system which will add more sensors and improve the performance is being designed