This paper presents a new type of ultrasonic gas molecule concentration sensor for rescue robotics. This devise can measure the change of the gas concentration with a sampling rate of over 400 kHz. The performance of developed sensor is investigated by applying as human breath gas measurement sensor. Ideal gas experiment results show that the proposed sensor could detect the difference between 5% CO2 and pure air over 50 dB S/N and could discriminate humidified air and pure air with 55 dB S/N. Another important result is that our proposed respiratory sensor could detect ”dead space” information distributed from lungs to mouth, which could not be detect by previously proposed commercial use gas concentration sensors. Therefore, it is highly probable that this sensor can detect in a very short time a small-difference of molecular gas change of survivors in the disaster zones.
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机译：本文介绍了一种用于救援机器人的新型超声波气体分子浓度传感器。该设计可以测量气体浓度的变化，采样率超过400 kHz。通过施用作为人呼吸气体测量传感器来研究开发传感器的性能。理想的天然气实验结果表明，该拟议的传感器可以检测5％CO 2 和纯空气超过50dB的纯空气，并可以区分加湿空气和55dB S / N的纯空气。另一个重要结果是我们所提出的呼吸传感器可以检测从肺部到嘴的“死区”信息，这是通过先前提出的商业用途气体浓度传感器无法检测。因此，高度可能的是，该传感器可以在很短的时间内检测灾区中幸存者的分子气体变化的小差异。
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