Development of ubiquitous pulse wave meter

Recently, the demand which wants to control the health by measuring body information such as blood pressure, body temperature, and pulse number increases. In jogging and under walking, there is a case in which the healthy subject harms the health. In this paper, the method for noninvasively measuring pulse wave using strain gauge is proposed and the development of the equipment was tried. As the result, this equipment measured ejective wave by the ejection of the blood from the heart, tidal wave from the bifurcation of arterial vessel, incisura wave (dicrotic wave) by the closure of aortic valve. Amplitude and shape of the signal waveform from 3 channel sensors are different. In the measurement by this equipment, the waveform of tidial wave and dicroric wave has appeared clearly in comparison with the equipment of the marketing. In addition, the signal waveform is variable in the existence of the motion. AI value and attractor were clarified from the data. The attractor of rest condition and exercise condition can be clearly distinguished.