Living objects with a body temperature above 0°C emit heat as infrared radiation, also known as thermal radiation, which is invisible to the human eye. PIR sensors, designed for this purpose, can ...
Abstract: The velocity measurement of gas/solid two-phase flow can be obtained by using the electrostatic sensor combined with cross-correlation measuring techniques. In order to realize the ...
Abstract: In order to the solving interference between the danger alarm light and the turn light, intelligent control circuit of dangerous alarm light and turn light is designed, and the composition ...