In order to detect the exhaled gases of earthquake survivors in the ruins of a narrow space
a portable carbon dioxide detector is developed.The detector using infrared sensors to detect carbon dioxide
directly access to digital signals through the microcontroller
and has temperature compensation function.The result is displayed by a vacuum fluorescent displayer
and when it upto the preset value
the sound and light alarm will be triggered.The test in the ruins show that the detector is suitable for narrow space survivors search.
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references
一种二氧化碳气体检测方法 [J]. 白泽生. 传感器与微系统 . 2007(07)
Infrared Measurement of Carbon Dioxide in the Human Breath: “Breathe-Through” Devices from Tyndall to the Present Day [J] . Michael B. Jaffe. Anesthesia & Analgesia . 2008 (3)