Dynamic Characteristics Calibration and Dynamic Performance Improvement of Infrared Carbon Dioxide Sensor
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摘要: 提出了红外二氧化碳传感器动态特性实验方法,建立了红外二氧化碳传感器的动态数学模型,阐述了动态补偿滤波器的设计过程,并讨论了影响动态数字滤波器补偿效果的各种因素.为了减小运算时间,改善传感器的响应特性,给出了一种将滤波器的差分方程变成递推运算的方法.实验结果表明,动态补偿滤波器有效地提高了红外二氧化碳传感器的动态特性.Abstract: An experimental method was presented to calibrate dynamic characteristics of an infrared carbon dioxide sensor. A dynamic mathematic model of infrared carbon dioxide sensor was established. The design process of the dynamic compensation filter was given, and the various factors influencing the compensatory effect were discussed. To reduce the operation time and to improve the response characteristic of the sensor, a method of converting difference equation to recursive arithmetic was adopted. Experimental result showed that the application of the dynamic compensation filter can effectively improve the dynamic characteristic of the infrared carbon dioxide sensor.
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Key words:
- infrared absorption analytical instruments /
- carbon dioxide /
- filter /
- dynamic models /
- compensation
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