提出了一种新型的非分散红外多组份气体分析系统,利用朗伯比尔定律分析了其工作原理,讨论了系统硬件和软件的实现方法;系统采用先进的多次反射池和滤光轮技术,简化了实验装置并提高了系统检测灵敏度；通过对不同浓度气体吸光度的测量,得到气体浓度与吸光度的关系式,并且以此关系式为依据,实现了气体浓度反演；实验表明设计的多组份气体检测系统测量值与标准值相关度均达到99.9％以上,误差在满量程的2％范围内,具有良好的稳定性和可靠性.%A new type of multi - component Non-dispersive infrared gas analysis system was described, Lambert- Beer law was used for analyzing its working principle; the principle and construction (hardware and software) are discussed. Through the introduction of multiple reflection pool and the filter wheel, the experimental apparatus was simplified and the system detection sensitivity was improved. The relationship between gas concentration and the absorption to IR radiation is obtained through measuring the absorbance of different concentration in lab. Then measure the real time concentration according to this relationship. The result proved that the measurement correlation with the standard value reaches above 99. 9% and the error is 2%. The system is stable and reliable.
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