| 摘要 |
PURPOSE:To enable the checking of the room for the presence of a person from outdoors by arranging a carbon dioxide concentration detecting means, a sound wave detecting means, a means of discriminating the detection signal obtained from an infrared detection means and a means of transmitting the presence confirmation signal. CONSTITUTION:This system is equipped with a crabon dioxide concentration detection means A which detects a rise in the concentration of carbon dioxide generated by human breathing, a sound wave detection means B which detects sounds generated by talking voices and movement of a human being and an infrared detection means C which detects infrared rays generated from a human being. Detection signals of these detection means A, B and C are analyzed by a discrimination means D and compared with a preset reference value to determine whether a person presents in the room. The presence confirmation signal is transmitted to a proper point by a signal transmission means E and furthermore, a person checking outdoors is notified of the results by a detection means F. |
