Abstract
In recent years, the monitoring system for the elderly are increasing an interest because of the aging society. The non-contact sensors are attracted an attention because the system requires that daily life of user doesn't interfere. Many of these sensors (e.g. infrared sensor, sound sensor, Doppler sensor) has used in the system, especially a microwave Doppler sensor has the advantage against the noise, light and temperature than another sensors. In this paper, as perspective of monitoring for the elderly, we are focusing on the detection of heartbeat and respiration because human state of life or death is finally able to judge. As initial stage of the system, this paper proposes the detection method about the component of respiration and heartbeat under the low-disturbance environment using the microwave Doppler sonsor.
