Contact-less Monitoring of the Major Blood Vessels Supplying Head and Brain (Carotid Arteries)

摘要

In this paper, the development of a system for measuring heart-rate and blood flow in the Carotid arteries is reported that require no physically connecting electrodes or other sensors to the body. The measurement system was implemented to simultaneously monitor the Carotid arteries and heart rate in order to get more valid information for detection and diagnosis of cardiovascular disease. The designed system is based on the Microwave Doppler radar concept with frequency of 2.4GHz and at the distance of up to 3 cm and is capable of detecting the vibrations of the Carotid arteries, without any contact with the person's body. The basic theory, a feasibility analysis and modeling, and preliminary measurement results of our basic Carotid arteries monitoring setup are presented.