机动车尾气检测在防治机动车尾气污染中起到十分重要的作用, 非分散红外法(NDIR)气体传感器作为测量尾气 CO、CO2的核心部件, 其性能指标必须满足国家相关标准的要求。为了在设计的初始阶段实现对设计方案的优化和性能评估, 本文提出了一种 NDIR气体传感器的性能仿真分析方法, 通过计算和分析 NDIR气体传感器的响应函数来估算传感器可以达到的测量精度。将该方法应用于机动车尾气 NDIR气体传感器的设计中, 证明该方法具有一定应用价值。

Vehicle exhaust testing plays an important role in the prevention and control emission pollution. NDIR gas sensor, as the key component of measuring CO and CO2 in the exhaust, has to meet the performance requirement of national standards. In order to optimize and evaluate the design proposal in the primary stage of design, this paper introduces computer a performance simulation analysis method of NDIR gas sensor, the measurement accuracy of the sensor is estimated by calculating and analyzing the response function of the sensor. The design proposal can be elevated in the primary stage of design. Using this method guided the design of NDIR sensor for vehicle exhaust and proves the application value of the method.