不分光红外传感器的高精度标定方法  

High Accuracy Calibration Method of Non-divide Light of Infrared Sensor

作　　者：李斐[1] 张以谟[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《仪表技术与传感器》2009年第5期108-110,122,共4页Instrument Technique and Sensor

摘　　要：传统的红外传感器标定方法的测量相对误差小于2%,无法完成高精度的气体浓度测量,制约了中国在不分光红外气体检测技术方面的发展。本文提出了一种结合流量控制和毛细管流速混合方法配气方法,配比出用于线性标定的多种气体浓度。利用火焰离子化探测器(FID)标定配气设备,确定标定基准,采用三次样条插值方法对不分光红外气体传感器进行高精度标定,该方法可以在量程不变的情况下,将相对误差降低到1%以内,实验证明:这种方法对各种非线性红外吸收方法都有着很好的效果。The precision of the traditional non-dispersive infrared sensor calibration method cannot achieve 1% FS, it has restricted the development in the high accuracy gas detection. Based on the combined approach of calibrating gas using the flux control and capillary flow, this paper used gas decollator to set the calibration benchmark, and introduced a method of cubic spline interpolation to not divide the light of infrared sensor for the high accuracy calibration, it can achieve 1% precisions. The experiment proved that this method has good effect to each nonlinear infrared absorption method.

关 键 词：红外传感器 标定 气体分割器 三次样条 

分 类 号：TB921[一般工业技术—计量学]