双通道数字红外辐射计的研究

Double-channel digital IR radiometer

针对目前所使用的红外辐射强度测试系统的不足,提出双通道数字红外辐射计的方案,即在同一红外辐射计中设计两套相互独立的红外辐射强度测试通道,在红外辐射产品点火试验测试中,双通道测试同时工作,同时进行数据采集。用研制的双通道数字红外辐射计分别在室温(25℃)和低温(-15℃)条件下进行6次对比试验,结果表明:两系统测试的误差小于5%,双通道数字红外线辐射计两通道之间误差小于5%,原1905A测试系统出现2次漏测,双通道数字红外辐射计无漏测。

The double-channel digital IR radiometer was developed for eliminating the disadvantages of the IR radiance testing system being used in testing some military infrared products.The double channels simultaneously test the IR radiance and connect the data when the ignition test of an IR radiation product is carried out.Six contrast experiments between the double-channel digital IR radiometer and IR radiance testing system were performed at 25℃ and-15℃.The result indicates that the error of the two systems are all less than 5%,and the difference of the two channels of the double-channel digital IR radiometer is also less than 5%.But 1905A testing system missed out twice and the radiator did not omit anything.The principle,design of key components,calibration and application are discussed in this paper.