End tidal carbon dioxide measurement using an electro acoustic sensor

机译：使用电声传感器测量潮气中的二氧化碳

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End tidal carbon dioxide measurement with an electro-acoustic sensor is demonstrated. The sensor consists of an acoustic resonator coupled to a low cost electro-acoustic element. By simultaneous measurements with a reference sensor, the new device was tested on subjects performing exercise, hypo- and hyperventilation whereby the CO2concentration ranged from 2.1 to 7.0 kPa. The output from the experimental device correlated well with the reference CO2readings with a correlation coefficient of 0.976. Response time for expiration less than 0.8 seconds was noted. The new device could be useful in situations where selectivity to other gases is not important.

机译：演示了用电声传感器测量潮气中二氧化碳的终点。该传感器由耦合到低成本电声元件的声谐振器组成。通过同时使用参考传感器进行测量，该新设备在进行运动，通风不足和过度换气的受试者身上进行了测试，其中CO 2 的浓度范围为2.1至7.0 kPa。实验装置的输出与参考CO 2 读数具有很好的相关性，相关系数为0.976。记录到的响应时间少于0.8秒。在对其他气体的选择性不重要的情况下，该新设备可能会很有用。

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《Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE》||p.3452-3455|共4页
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Folke M.; Hok B.; Ekstrom M.; Backlund Y.;
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End tidal carbon dioxide measurement using an electro acoustic sensor

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