熱流式温感センサの高精度化と人肌検知の検証

抄録

This paper reports on human skin detection using a heat-flow-type warmth sensor that discriminates the material of a contacted object by a heat-flow-peak value in a transient heat-flow waveform. In this study, first, a module composed of synchronous detection circuits was fabricated as a sensing circuit for high accurate sensing. Compared to a conventional voltage-dividing circuit, the variations of the heat-flow-peak values were reduced. Then, human skin detection was tested on hand and arm. The thermal conductivity estimated from the measured heat-flow-peak value was close to about 0.5 W/m･K, which is considered to be the thermal conductivity of human skin. The experimental results showed the possibility of human skin detection by the heat-flow-type warmth sensor.